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Could it be that there is something in our water supply that is causing this, maybe a herbicide residue?

Hi David I have a 5kg fire extinguisher and an external reactor which lasts about a year running at about 5 bubbles per second

This is a familiar story I have also benefited from advice from UKAPS. Key items for me were; Fire extinguishers for CO2, dry ferts from TNC and the article on light quality and suppliers of florescent tubes. these 3 articles resolved issues that I had been tormented by for years and saved a...

Latest pics, recovering well 3 weeks after replant .

I'm using RO water but still struggling with pogostemon erectus

1 week after a major replant of all the stem plants and Cut back of the rooted species. The Gloss had become a thick matted carpet, after replanting with just a few shoots it is just starting to run.

I'm still practicing the photography and posting pics. Lets see if this works http://s1382.photobucket.com/user/paul_harris6/library/?sort=3&page=1

The lights make the colours stand out, Grolux especially. My choice of tubes was guided advice posted on this forum.

Thanks Alexander. The size allows the schools of Harlequins and Rummynose to swim the length of the aquarium. They occupy different parts of the swimming space. Rummy nose are always below and nearer the front of the tank than the Harlequins

No secret just the usual things. Over the years I have added to the system. CO2 gave the biggest improvement. Our water is very hard and RO water helps. Oddly I find that growth is best with fewer water changes, contary to advice. Does anyone know why this should be? Over the years I have found...

Thank you for your comments, more pictures attached. Grolux enhances the colour of the Platies. Photography is new to me, any advice would be appreciated.

Hi Rebel The tank has been running in its present location for 16 years. It tends to get neglected in the summer when I am busy with my seasonal horticulture business and recovers in the autumn. I try to follow the NBAT guidelines regarding number of species however I have not been successful...

Thank you for your encouraging responses. The tank has developed over the years, I have had a few problems and have learned by experience

Final full tank shot: Title: Dutch 680 litres Dimensions: 6 x 2 x 2 feet CO2: about 12ppm via an external reactor Filtration: 2 x ehiem canister filters Lights: 5 x 85w t5 tubes Photo Period: Growlux 10 hours then 2 x 8 hours + 2 x 4hours Fertilisation: Dry fert solution alternate days...

Thanks all. I guess ideally I should up the CO2 . The plants are OK but I struggle with some species. Recently I had a problem with a build up of algae like stuff on the side of leaves which faced the flow, Blue green algae? On testing I found I had quite high nitrates so I have reduced the...

I thought you might say that, I have a bubble counter which produces many small bubbles but I can see fewer larger bubbles going through the reactor. The pH is 7 and KH 4 which is just about enough CO2? I have never been able to get the checker beyond mid green. Do I need more CO2? Attached pic...

How many bubbles per second are required for a 680 litre tanks?

yes, I have a dernerle regulator. I am revamping my setup which has been unused for a couple of years Paul

Can anyone give me current recommendations on the the best solenoid value for a fire extinguisher CO2 setup and where it might be obtained. thanks Paul