After a few weeks I’ve finally gotten my kH up to 4° in my 29g (started < 1) and can finally take my regulator, reactor etc out of their box (no controller*, at least yet).

I’m going to start with 1 bubble every 2 seconds and go from there, but I have a few other questions also.

1. In the beginning stages, when and how often should I measure my pH to most accurately determine where I’m at?
2. Should I let the CO2 run 24/7 or shut it off at night? If I should shut it off, when should I turn it on and off in relation to lights on, lights out?
3. What are the odds of Oxygen being an issue? Should I be running my sponge filter when lights are out?


Can’t wait to fire this baby up, thanks in advance for any help.

edit *: Initially had typed solenoid, I in fact do have a solenoid, it is a pH controller that I haven't purchased.