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I have just purchased a Cal Aqua drop checker, reference solution (4dkh) and indicator solution. When I half fill the drop checker with ref solution and add 2-3 drops of idicator solution the miture turns Green. Should this happen ? After one hour in the tank it is still Green. From what I...

I have recently just added a D&D CO2 systrem to my 180 LTR tank. I am finding I need around 60 bubbles per min to achieve 10 PPM . With the regulator set to 1bar. Using the calculation prvided by D&D for the size of the tank. I expected 14 bubbles per min to be satisfactory. However, I suspect...

Please advise the optimun duration my CO2 should be on? At present it is switched on and off with the lighting timer = Six hours per day. Is there a benefit in having the CO2 on before lights on and off after lights off? Also, I have read conflicting information regarding drop checker...

Has anyone had any experiences using a Hydor C02 kit. At present I am using a Hagen yeast reactor. I require more CO2 for new 180 litre tank and the Hydor seems to fit the bill. I am restricted to a throw away bottle as I am unable to get a CO2 refill locally. You thoughts and comments on the...