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Thanks for the advice. Seems I'd be better off switching the CO2 with the lighting. Cheers.

Thanks for the advice. I'm sorry but I forgot to mention in the post that I am injecting CO2 which is controlled by a pH meter, but as the pH at the moment is low, I am having to keep adjusting the meter as the pH falls. I am presently growing Staurogyne sp; Rotala rotundifolia; Hygrophila...

Hi. I hope someone can help me. I have just set up a 250 litre (50 gallon) planted tank. Measurements are 110mmx50mmx50mm. I have used Oliver Knott Nature soil and filled the tank with RO water. Lighting was 4x 39watt T5 tubes lighting the aquarium for 6 hours. I was unable to get a pH reading...

Thanks Garuf, I will get some Excel and give it a try. Cheers,

:angry: Hi everyone. Could anyone help me. I have recently setup a CO2 system to my planted tank but I am having problems with black algae clinging to the leaves of my plants. pH fluctuates between 6.65 and 7.0 depending on the time of the day and KH is 4. I have just added 4 shrimps and a...

Thanks Sam, Since I posted this query I have tried experimenting by increasing the amount of CO2 entering the tank and this has helped, so you were spot on. I have now also cut down on the surface movement to see if this helps. Cheers. Mike.

Hi, I am hoping someone could help me with a problem with my recently installed CO2 pressurised system. The plants seem to be responding quite well but the problem is with the length of time the system is putting CO2 into the tank. My lights are set to come on at 14.00 every day and go off at...