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I'm no expert but there is not enough potassium and no phosphate so these still need adding. Obviously no micros either. I'm not sure if you add it to a liter or not.

Thanks George and Tom that's very helpful. I'll start with 10 ml per day of each.

I see George is adding 6ml daily to 60 liters with an inert substrate. So for ei levels in a 200 l would I need 120 ml macros divided over a week with a 50 % water change once weekly to achieve 30 ppm N?

So Tom how many mls of nitrogen would you add for a 200 l? do I need to add phosphate?

I've just received some of these ferts to try. I looks like the instructions which are german say that the nitrogen needs to be dosed at 1 ml per 50 l daily. The micros are 1 ml per 20 l every week. Am I translating this correctly? It seems you guys are dosing much higher levels. Would...

Actually this photometer looks interesting - NPK, Mg, Ca. ok its pricey @£450. Are these accurate and useful?http://www.hannainst.co.uk/product_info.php?cPath=1207_1263&products_id=1863

What do you think of this analyser Darrel? http://www.hannainst.co.uk/product_info.php?cPath=1694_1730_1759&products_id=1854

Can overfiltering remove npk from the tank?

Thanks Clive. Interesting read.

I was wondering what effect water conditioners might have on the micro nutrient content of the water. I do 1 or 2 water changes a week and at least 50%, sometimes more. I do a rough guess at the amount of conditioner needed to remove chlorine and probably err on the side of caution (i.e. More...

I have lost all my original crypts completely due to to intermittent melting over the last 6 months. Initially they seemed to do well but they became weaker and and weaker as I pruned off the melting leaves. I used EI and FE co2. Recently I have switched to tpn+, 180l tank, 10mls daily. This...

Re: 10 day old tank, stem plants sick - advice please. EI t Clive I will try get something posted this weekend that's shows my flow and pipework. I'd like to continue this thread on my journal page as it's relevant to my tank and process I'm following to solve my problems...

Re: 10 day old tank, stem plants sick - advice please. EI t Clive I think I need to investigate how to appropriate a clear acrylic spray bar. I see there are some diy solutions on the forum. Regarding the surface scum I have reason to believe that it is not an oil based layer but a solid. I...

Re: 10 day old tank, stem plants sick - advice please. EI t So I have good growth just after a water change BUT this seems to drop off over the next week as I move towards my next water change. As the week progresses I develop a hydrocarbon shiny layer on the surface of the tank and the plant...

Re: 10 day old tank, stem plants sick - advice please. EI t Thanks for your help folks :thumbup: I have decreased the strength of the lighting and increased the CO2 (yellow) and the plants are growing again. I have to have 15 - 20 drop per sec to turn it yellow. I need more time to tweak...

Re: 10 day old tank, stem plants sick - advice please. Ok so today after 3 days without a water change I replaced about 75% water. The lights are on for 6 hours at 25% of the the rated capacity of the LED lights. My co2 is green despite me trying to get it to yellow. I have no fish so I...

http://4e.plantphys.net/article.php?ch=t&id=131 A quick google led to a site regarding plant physiology. Interesting.

Re: 10 day old tank, stem plants sick - advice please. So does that mean that at 45cm the light should be approx 245umols when the unit (marine) is at 100% If so then at 25% phasor weapon power the light delivers 61 umols at substrate level in a 45cm tank. So by dropping to this level I...

Re: 10 day old tank, stem plants sick - advice please. EI t These are the planted tank units, not the marine units. You can measure light in mols? I thought that was a unit of molecular weight! Now I'm feeling out of depth :shock: . My lights are 40cm from the surface of the tank and the...

Re: 10 day old tank, stem plants sick - advice please. EI t Ok so I've dropped the lighting to 25% of the maximum output, no leaks in the co2, >10 bubbles per sec but have a cheap bubble counter (do they make different sized bubbles the different types?). Going to hold off on ferts and just...

Re: 10 day old tank, stem plants sick - advice please. EI t Clive they are LED lights - here is a link. http://www.tmc-ltd.co.uk/planted-tank/grobeam-1000.asp at 100% output they produce 800 lumens which I understands means little because we need to know PAR. The lights increase to their...

Re: 10 day old tank, stem plants sick - advice please. EI t Thanks Paul If I'm doing 50% water changes every 24 - 48hrs would these nutrients still be depleted. I imagine the trace would become depleted quickly but do you think there will be enough nitrogen and phosphate just within the tap...

Re: EI - 10 day old tank, stem plants sick - advice please. Thanks for that saintly, i read somewhere afterwards that I should not have done that. Do you think my problems stem from pruning to early and not allowing the plants to establish well. Would this have weakened the rotala for...

Re: EI - 10 day old tank, stem plants sick - advice please. Thanks Neil. It will be interesting to see what it grows into. I have a feeling the wood will disappear to a large degree which is not want I want really.

I have a 10 day old 180l tank. I bought pre-cycled filter media from LFS and the substrate is ADA amazonia granules with power sand special. I have excellent flow (eheim 2076 + vortech mp10) and am using CO2 at about 10 bubbles/sec which keeps my drop checker at a green to light yellow...