I added a dennerle CO2 checker in my tank a few days ago (only have CO2 tablet system and wondering if I should upgrade to a pressured system).
Have a 33g with 2x 24w T5 HO...so if I can follow the basics this is for sure not a high light level tank.
The checker is either the darkest green (20) or the blue just below it (10). Hard to compare the liquid between these two colours on the sheet. Seems more blue from time to time and on other moments more green.
So would a CO2 system get this to 20-30 range (green-yellow)?
or does it not have any use with my light setup?
ps hope you do not mind me jumping on this question.