Hey i have a 90 gallon i was looking to put some co2 into but k now nothing about it. I was referred too u by samamorgon. The tank is doing pretty good right now except for a little green algae. Its been up and running for about 3 months. Im looking for a co2 setup that requires little adjusting. My lighting consists of 4 t5ho, 2 of which are 54w and 2 are 24w. My ph is 6.8 and gh and kh are 3. Thanks