[neilw]

Hi, I love this site it's fantastic!

I've a question about CO2 timings, mine has a solenoid and I've had it on the same timer circuits as the lights at the moment, is this right? or should it be turning off before the lights go out?

 

[neilw]

Thanks for the info, I guess I will have to do some more reading on the matter. I thought the plants would release CO2 when they weren't photosynthesising at night so therefore the ph would drop, if there is still CO2 going into the water during periods where they aren't photosynthesising then that would decrease ph further? Confusing stuff.