Hi,

my name is Robin and I am relatively new to the Aquascaping hobby after having tanks for a little over 2 years now.

In my 112l tank I use an external reactor to suplly CO2 and have a PH-Controller with it. It is set to 6.5 PH (hysteresis is 0.1PH). With KH 3 (tested by a drop test kit, which is not accurat as I learned here) I should have around 30ppm CO2. It is switched of at night.

My question is:
During the day the system is switching on and off naturally, so I have no constant input of CO2, just an almost equal level between 24ppm and 30ppm (according to the Dennerle CO2 table at least.)
Is that the right way?
Is it better to use an internal reactor that constantly sprays CO2 bubbles in the tank?
How would I set the right amount of bubbles with a drop checker?
If the system is set to eg. 35 bubbles/minute for the whole day I would have a high variance in CO2 level during the day.

Thanks for sharing your knowledge. This site is helping me more than anything before to understand things.

Robin