Originally Posted by
Mando
Filipe, have you thought about leaving the co2 on for 24hrs? This reduces the PH swing and this is something I have to research for myself. I'd definitely test it before the discus go into the tank. I know some red plants that thrive with less than 15ppm of nitrate so those are some plants to think about. Therefore, having 15ppm or less is not a problem. My plan, to eventually go planted discus, is to start of with a planted 100g+ tank first. I want to practice keeping the water quality in the planted tank that meet discus requirements before adding discus. I want to establish a nice maintenance routine and once I feel comfortable, then I'll add my stock.
Also, consider having a lower dose of co2. Does not have to be 30ppm. It can be 15-20 as this will reduce the gap between the swing. And, as Mervin mentioned, if it's low requirement plants, then why not dish out the co2 system? My plant is to have an array of plants with a heavy mid and background.