It seems, a lot of people questioning why we injet so many CO2. May be I can explain a little bit, that is our experience of using ADA substrate, it turn the water to very soft, KH down to almost 0, and PH also below 6. As you may aware lower KH will cause low buffer to PH, if according to the relative table of PH to KH to measure the CO2 level, low KH and low PH of water will not easy to retain CO2, that why we have to injet more to compensate the loss. Also to injet how many is suitable for the same size of tank, I think it should also consider the density of plant and their grow rate. For those fast growing plant, the amount of CO2 should use up faster than the slow one, especially we use strong lighting. I can say it is a kind of push strategy to provide a saturate environment in order to let the plant stronger, because only a strong plant could affort heavy trim and split branch more easy after trim. B)Hi Barry,
I make that tank around 33lt yet you say you have CO2 at 4 BPS, do you know what the CO2 level is. At that rate it could be over 100ppm?