Rusty_Shackleford26 141
Fish Addict
- Joined
- Jan 6, 2019
- Messages
- 724
- Reaction score
- 1,525
- Points
- 93
@Aquatopia I'm no CO² expert, in fact is been several years since I've run CO² but I'm jumping back in soon.
It seems like is something is amiss with your set up. You're running your CO² for several hours before your lights come on to reach a certain pH?
The general accepted practice is to target 30 ppm of CO² for the plants benefit. 30 ppm should be safe for most fish, anything above that and your taking chances with your fish.
There are a couple of ways to measure for 30 ppm of CO², drop.checkers and pH drop.
If you don't have a drop checker then what you are shooting for is a 1.0 drop in pH.
Take your baseline tank pH from DEGASSED tank water, then measure pH every 30 mins after CO² comes on. Again you're looking for that 1.0 pH drop. Once you hit it you can adjust your gas to keep it steady. This my the a few attempts taking gas exchange/surface agitation into consideration.
Most people I know try to turn on the CO² one hour before the lights go on to hit 30ppm by the time lights go on. Also they shut CO² off an hour before lights out to allow time for the tank to off gas.
It seems like is something is amiss with your set up. You're running your CO² for several hours before your lights come on to reach a certain pH?
The general accepted practice is to target 30 ppm of CO² for the plants benefit. 30 ppm should be safe for most fish, anything above that and your taking chances with your fish.
There are a couple of ways to measure for 30 ppm of CO², drop.checkers and pH drop.
If you don't have a drop checker then what you are shooting for is a 1.0 drop in pH.
Take your baseline tank pH from DEGASSED tank water, then measure pH every 30 mins after CO² comes on. Again you're looking for that 1.0 pH drop. Once you hit it you can adjust your gas to keep it steady. This my the a few attempts taking gas exchange/surface agitation into consideration.
Most people I know try to turn on the CO² one hour before the lights go on to hit 30ppm by the time lights go on. Also they shut CO² off an hour before lights out to allow time for the tank to off gas.

I can only adjust the intensity and not the colouration, sadly, and I don't run Co2 apart from the liquid carbon dosing.






