When do I use co2 in planted fish tank ?

I've purchased a co2 d501 generator kit using citric acid and baking soda. When I first added it to my 55 gallon planted fish tank it bothered the fish until I adjusted the bubble flow and turned on the air stones. The fish are doing great now. I've went online reading different reviews about when to use the co2 day or night, can anyone that use's co2 tell me when is the best time co2 should be applied inside the tank.

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Comment by Peter on April 15, 2014 at 10:57pm
1hr before lights go on co2 should go on. 1hr before lights out co2 should be shut off. Dont run co2 and an air pump at same time. Its not pro. If ur fish are gasping lower the bps on ur co2. Better yet set co2 at 1bps and raise it every 3 days +1bps so ull slowly up to co2 in ur tank and have less chance of gassing ur fish.
Comment by rocsteadi on April 17, 2014 at 1:15am
Thanxs much


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