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  1. Tobias Coring

    Twinstar 600S LED spacing...

    Hi, ... we have now photographed one Twinstar 600S from our warehouse. Same assymetrical LED placement. From Twinstar Korea we have received the information that this LED placement is used to avoid any heat issues of the LEDs. Hope this topic is solved now :). Best regards Tobias
  2. Tobias Coring

    Twinstar 600S LED spacing...

    Hi, here is a first picture from one of my employees that I've asked yesterday in the evening to make a photo of his own 600S. As you can see there is also this assymetrical LED placement. Later we will post a quick shot of a Twinstar 600S from our warehouse. Best regards Tobias
  3. Tobias Coring

    Twinstar 600S LED spacing...

    Hi, @rob I see you've purchased the light from us too. We will also ask the distributor (and he asks at Twinstar Korea) regarding this case. Best regards Tobias
  4. Tobias Coring

    Twinstar 600S LED spacing...

    Hi, I've just sent you another mail. Suzre this seems to be kinda odd but you find many pics of Twinstar LEDs with assymetrical LED placement. Tomorrow we will check in our warehouse if the other 600S have the same placement. The last picture seems not to be a 600S. It's to long. Best...
  5. Tobias Coring

    Bucephalandra

    Hi, those plants are lovely and not very difficult to grow. Price of those plants is very high worldwide, but those plants aren't that rare anymore. We've dropped price for them already. Europeans are not like Japanese people, which are paying really alot for those plants. At Flowgrow you can...
  6. Tobias Coring

    Spezial N - Nitrogen Fertilizer

    Hi, have you read the recipe at all? ;). There is NO, absolutely NO NH4NO3 in the recipe. A little bit Urea is in the mix, but the mix works without the Urea too.... but believe me. If you dose just NH4NO3 or Urea you will not get the same results. Best regards Tobi
  7. Tobias Coring

    Spezial N - Nitrogen Fertilizer

    Hi Tom, yep you are right. CO2 is the first thing to check and adjust. Best regards Tobi
  8. Tobias Coring

    Spezial N - Nitrogen Fertilizer

    Hi, 10 ml should be quite enough for that tank volume. I would keep it that way and observe. 3 days is a short timeframe. I would not expect to see a tremendous change in 3 days. Best regards Tobi
  9. Tobias Coring

    Spezial N - Nitrogen Fertilizer

    Hi, the 10 ml to what tank dimnesions? Best regards Tobi
  10. Tobias Coring

    Spezial N - Nitrogen Fertilizer

    Hi, my Mikro Spezial Flowgrow is a tracemix with gluconate,citrate and ascorbat. More like Flourish than csm+b. How much Spezial N are you dosing and how much PO4? Best regards Tobi
  11. Tobias Coring

    Spezial N - Nitrogen Fertilizer

    Hi, aren't you dosing any traceelements? Those are essential too. And how much are you dosing from the Spezial N? Best regards Tobi
  12. Tobias Coring

    Spezial N - Nitrogen Fertilizer

    Hi Wet, can you please change the fert name to "Aqua Rebell Spezial N" that's the fertilizer name. But I hope that many will use that recipe too and finetune it for their needs. I think those kind of nitrate ferts are a big gain for the hobby. Best regards Tobi
  13. Tobias Coring

    Spezial N - Nitrogen Fertilizer

    Hi, as explained before... Spezial N is ONLY a nitrogen fertilizer. You need to add everything else (PO4, trace elements etc.). The Ca and Mg amounts in this fert are not enough to supply your plants. I would not add additional potassium or only if you see a deficiency. Best regards Tobias
  14. Tobias Coring

    Spezial N - Nitrogen Fertilizer

    Hi, on all my bottles is that warning sign and in the description too. I do not sell those recipe... everybody is free to change it. When using "recipes" you need to know a little bit what you are doing. EDIT: I've added the warning to the first post. Best regards Tobi
  15. Tobias Coring

    Spezial N - Nitrogen Fertilizer

    Hi, with your pH ammonia can form from urea. Ammonia can be deadful to fish. Best regards Tobi
  16. Tobias Coring

    Spezial N - Nitrogen Fertilizer

    Hi, you can of course double the amount of salts. Should be no prob. The other recipe we are testing has the double amount in it. With your pH you should stay away from urea. Best regards Tobi
  17. Tobias Coring

    Spezial N - Nitrogen Fertilizer

    Hi, I've not tested a new charge of "all in one" yet. The last one needed more nitrates in comparison to the micros and po4. I do not think that the Spezial N is somehow "lean". You can add as much as you want. I prefer 3-4 ppm nitrates per day in my highlight tanks... The urea does not seem...
  18. Tobias Coring

    Spezial N - Nitrogen Fertilizer

    Hi, yep... I'm using a recipe on my own tanks without urea for the past 3 months. Working fine too and I have good feedback from other testers with that recipe which had some problems with GDA with the urea in the fert. Best regards Tobi
  19. Tobias Coring

    Spezial N - Nitrogen Fertilizer

    Hi, I'm glad that you report back. It's kind of the same experience all users are doing when dosing with that nitrogen fertilizer. Best regards Tobi
  20. Tobias Coring

    Spezial N - Nitrogen Fertilizer

    Hi, @Bjorn Flowgrow is a Ferrousgluconate based fertilizer and can lead to some unproblematic clouding under very few conditions. If you have hard water and add alot PO4 simultanously it could lead to a bit hazy water. We recommend the Flowgrow mainly for soft tap water. Our Eisenvolldünger is...
  21. Tobias Coring

    Spezial N - Nitrogen Fertilizer

    Hi Michael, those other ferts you have mentioned are no nitrogen fertilizers. Of course people are adding the other essential nutrients too: They add a trace element mix like the Mikro Spezial Hybrid (but that one is not common... have never started to sell that fert). Most use the Spezial...
  22. Tobias Coring

    Spezial N - Nitrogen Fertilizer

    Hi, an All in one is in testing... but it will take some months till it will be ready. The normal dosing instrauctions of those ferts recommend less dosing, but when your tank is doing fine => dose as you wish ;). You are addin from each fertilizer at the moment: Aqua Rebell Makro Spezial...
  23. Tobias Coring

    Spezial N - Nitrogen Fertilizer

    ah... besides I use Aqua Soil Amazonia in all my tanks. Best regards Tobi
  24. Tobias Coring

    Spezial N - Nitrogen Fertilizer

    Hi, I do not start with high lightning. Normally with 6-8 hours and 50% or less of my wattage. I start all my tanks as densly planted as possible regarding the layout. I do alot of water changes in the first weeks. I put in a lot of shrimp very fast to combat upcoming algae (red cherry shrimp...
  25. Tobias Coring

    Spezial N - Nitrogen Fertilizer

    Hi, i have very powerful light fixtures above my tanks (Easy Life Paradiso) but they are all dimmable and I only run them on 100% 1 hour per day. The rest is around 50% (which is still ~0,65 Watt per liter) at my 240 liter tanks., The 360 liter tank has less light due to it's bigger dimensions...
  26. Tobias Coring

    Spezial N - Nitrogen Fertilizer

    Hi, at the moment I do not have that many fish in some of my tanks. Mostly because I'm to lazy at the moment to get some new fish and decide what to get ;). And to tell the truth I love plants more than fish :D. So no need to rush..., but especially the last shown tank needs some more fish. I...
  27. Tobias Coring

    Spezial N - Nitrogen Fertilizer

    Hi Hoggie, I have no problems with that mixture. I do test an All-in-one fert with those ingredients at the moment. But logically the calcium can precipitate with the phosphate. One DIY guy at flowgrow had some probs with it. You need to heat the solution... One other quick shot of one of my...
  28. Tobias Coring

    Spezial N - Nitrogen Fertilizer

    Hi, this was the daily routine: Makro Spezial N - 22 ml Mikro Spezial Flowgrow - 6 ml Mikro Spezial Eisen - 3 ml Makro Basic Phosphat - 10 ml at the moment I'm experimenting at this tank with some other ferts: Spezial GH Boost N (adds no Urea. Only CaNO3, MgNO3 and KNO3 - 2 ppm NO3 per 1 ml...
  29. Tobias Coring

    Spezial N - Nitrogen Fertilizer

    Hi, I would add around 1-4 ppm of NO3 depending on plants/light etc. The tank seen in my last post gets ~3 ppm daily (3 ml per 50 Liter). Best regards Tobi
  30. Tobias Coring

    Spezial N - Nitrogen Fertilizer

    Hi, you add as much "Spezial N" as your tank needs. 1 ml per 50 l only adds "1 ppm NO3". And please remember => Spezial N is only a nitrogen fertilizer. It does not add any micronutrients and no phosphate. You need to add it additionally. If your tank needs more potassium => add more potassium...
  31. Tobias Coring

    Spezial N - Nitrogen Fertilizer

    Hi, as I'm the manufacturer of the Aqua Rebell fertilizers I can say that Urea is included in the Spezial N :). For better understanding the amount of Urea is converted to NO3 in the dosing regime. 0,2 ppm of the NO3 come from the urea part. On the bottle you will see that urea is in the...
  32. Tobias Coring

    Spezial N - Nitrogen Fertilizer

    Hi, you can add PO4 to a Spezial N bottle. But you have to be carefull regarding the calcium and potassium. It can "stick together". Due to that I would mix up the Spezial N part first and than get some KH2PO4 into it. The solution will stay clear. I have a "All in one Mix" at the moment in...
  33. Tobias Coring

    Spezial N - Nitrogen Fertilizer

    Hi, you have to dose as much as your tank needs :D. With good filtration it's possible that you need to dose alot more from the AR Flowgrow. It's an organic stabilized Micronutrientmix with Fe-gluconate and Fe-citrate and quite some ascorbate. Some users at flowgrow experiment with the mixture...
  34. Tobias Coring

    Spezial N - Nitrogen Fertilizer

    Hi George, I dose it dependend of what the tank needs. In some tanks around 2-3 ml per 50l in others only 1 ml per 50l daily. I get bba when I dose to much of it. A good indicator in my tanks. CO2 optimization does not solve this completely. I need to dose a little bit less micronutrients and...
  35. Tobias Coring

    Spezial N - Nitrogen Fertilizer

    Hi, in some tanks I dose additional K2SO4 or some KNO3 besides the Spezial N. But not much additonal K+ for the tanks. Around 5 ppm more for the week. Micros I use the AR Flowgrow. Best regards Tobi
  36. Tobias Coring

    Spezial N - Nitrogen Fertilizer

    Hi, that's what I'm dosing daily. And of course I dose PO4 too. Around 0,3 ppm daily, a little bit extra K+ at some tanks and enough micronutrients. Best regards Tobi
  37. Tobias Coring

    Spezial N - Nitrogen Fertilizer

    Hi, the dosage instructions are very conservative/lean because somebody with no clue at all could buy those ferts. When you do regular water changes etc. you can dose alot more. I'm dosing around 3-5 ml per 50 l => 3-5 ppm NO3. Best regards Tobi
  38. Tobias Coring

    Spezial N - Nitrogen Fertilizer

    Hi Tom, short answer regarding the soil. Nearly 80% of all people tried those ferts have ADA Aquasoil Amazonia in their tanks and they do have a big difference in growth. I also only use ADA Amazonia in all my tanks. And those people have not used any limited approach. Many do "EI" like dosing...
  39. Tobias Coring

    Spezial N - Nitrogen Fertilizer

    Hi, i will not go into the details again guys ;). You can read everything in the posts before. Especially regarding Clive I do not get you man. Have you read any sentence from my former posts? Is my English that bad? The "assumptions" of the K+ uptake are based on the photmetric test kit...
  40. Tobias Coring

    Spezial N - Nitrogen Fertilizer

    Hi George, glad to hear. But as Clive said.... I do not want to get any new "myths" going around. Especially regarding K+. I do not know if the Spezial N is doing that great because of the K+ "issue". When reading some parts of the thread it could lead to maybe false conclusions. I do not want...
  41. Tobias Coring

    Spezial N - Nitrogen Fertilizer

    Hi, with good amounts of ferts you can compensate regarding the filter issue. I do not think that it needs to be a problem. The Spezial N can help, but regardless of the filtration or we will see ;). In my forum flowgrow.de I do not have many people filtering heavily. That's why I'm so excited...
  42. Tobias Coring

    Spezial N - Nitrogen Fertilizer

    Hi George, some of us use Koralias too. They are very nice, especially the nanos. Flow is very essential and I think Tom Barr made it clear with his tests and his CO2 probe how essential flow is. When having a near empty canister you get alot more flow out of it. That's the reason why only some...
  43. Tobias Coring

    Spezial N - Nitrogen Fertilizer

    Hi George, one thing in Germany we do also is that we do not "overfilter" our planted tanks. Many of us plant folks do not use hightech biofilter media (for example sinterglass etc.) for our planted tanks. We just use our tank itself as a filter. If you stock your tank "normally" and not like a...
  44. Tobias Coring

    Spezial N - Nitrogen Fertilizer

    Hi Darrel, I do not get it either regarding the upbuild with 50% waterchanges. When we at flowgrow.de tell somebody the principles of a planted tank we always tell the people to do 50% water changes per week. Of course somebody will always be out there only changing once a month, but those...
  45. Tobias Coring

    Spezial N - Nitrogen Fertilizer

    Hi Darrel, it's http://en.wikipedia.org/wiki/Sodium_tetraphenylborate. @all interested in that photmeter with testkits I can ask Anton Gabriel (he is the inventer of the cheap photometer) if it's possible to send out testkits+photometer to the UK. Of course you can ask him too. He is a fellow...
  46. Tobias Coring

    Spezial N - Nitrogen Fertilizer

    Hi Clive, thanks for your reply. But at all... I've dosed my tanks before with alot more Urea and I've dosed with alot more NH4 fertilizer too. Adding just 3-5 ppm of NO3 coming from Urea or NH4. There wasn't that growth. And I've started with low Urea and NH4 dosages and have risen the level...
  47. Tobias Coring

    Spezial N - Nitrogen Fertilizer

    Hi Darrel, here in Germany many water test enthusiasts use this test kits (including photometer) http://www.wasserpantscher.at/ It's very cheap and those tests are very accurate. With that you can measure K+ easily. A DIY K+ test was introduced at flowgrow.de some time ago...
  48. Tobias Coring

    Spezial N - Nitrogen Fertilizer

    Hi, in Germany it isn't allowed to sell oxidizing nitrates in powder form :(. Due to that I can only offer those stuff in liquid form. As mentioned earlier I do offer those stuff for people who do not want to mix it up by themself. I'm willing to give all people from Ukaps intersted in this...
  49. Tobias Coring

    Spezial N - Nitrogen Fertilizer

    Hi Clive, sorry mate... I think you are not reading what I'm typing. It's not the Urea part in the fertilizer. As I've said in Germany alot of people are dosing with NH4 or Urea or with a commercially available fert containing no3nh4, kno3 and urea (which is available for SOME years now... )...
  50. Tobias Coring

    Spezial N - Nitrogen Fertilizer

    Hi, of course a plant should not care which form of NO3 it's getting but somehow the plants react much different when using this mixture. I'Ve added CaNO3 alone for some weeks without that results, I've too used NH4NO3 for a long time and many other nitrogen sources. And for organic nitrogen...
  51. Tobias Coring

    Spezial N - Nitrogen Fertilizer

    Hi Clive, you can read the facts of the tanks at flowgrow. And I only said that those potassium levels could be the problem but not that they are for every one. At all I can say, that urea and ammonium do not work as the nitrogen fert with the different compounds of nitrate. With only ammonium...
  52. Tobias Coring

    The Art of the Planted Aquarium Contest 2011

    Hi, Pic 3 is from Marcel Dykierek tank and he is the winner of the 3rd prize. He is also one of my employees :). So one of the Germans ;). Best regards Tobi
  53. Tobias Coring

    Spezial N - Nitrogen Fertilizer

    Hi, please remember that the recipe uses one type of calciumnitrate and magnesiumnitrate. Of course you can use any kind of calcium- / magnesiumnitrate but you have consider the crystalwater in the formula regarding the weight of the salt and than need to calculate a little bit to achieve the...
  54. Tobias Coring

    The Art of the Planted Aquarium Contest 2011

    Hi, here are some more pictures: http://www.flowgrow.de/kein-thema-wenig ... 14519.html http://www.flowgrow.de/kein-thema-wenig ... 14480.html Best regards Tobi
  55. Tobias Coring

    Spezial N - Nitrogen Fertilizer

    Hi Dan and of course all other Ukaps Members, Dan and I've talked about the nitrogen fertilizer with calciumnitrate, magnesiumnitrate, potassiumnitrate and urea in Hannover. Here you can find the original thread about it at flowgrow (rubbish translated by google...)...
  56. Tobias Coring

    ADA Aqua Soil analysis

    Hi, I'm not planning to test any other substrates at the moment. Best Regards Tobi
  57. Tobias Coring

    ADA Aqua Soil analysis

    Hi, it's a direct analysis of the substrate. The ppm values are for 100g dry substrate (mg/100g Boden) The leaching was not measured... it is a laboratory specialized in substrate analysing for horticulture and winegrowing (one of the best in Germany). I could not select which nutrients will...
  58. Tobias Coring

    ADA Aqua Soil analysis

    Hi, here an analysis of the ADA substrates initiated by me. http://aquascaping.flowgrow.de/aquascap ... il-analyse I think there are some really interesting nutrientconcentrations in the different soil types. Best Regards Tobi
  59. Tobias Coring

    Aquatic Scapers Europe - International Aquascaping Contest

    Hi, great to see so many people who want to participate. The judgement of the "photographic skill" should not scare people away. It is only honest to get something like that into the scoretable. In the other contests photographic skill matters too. But at all we will not penalize a very good...
  60. Tobias Coring

    Aquatic Scapers Europe - International Aquascaping Contest

    Aquatic Scapers Europe present a new international aquascaping contest. The Aquatic Scapers Europe - International Aquascaping Contest 2009 is an exclusive freshwater planted aquarium contest with two categories. One category the nano competition, will be for aquariums up to 40 liters and the...
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