Question about duration of CO2 fertilization

[ah tan]

hi all,

should i on my CO2 24/7 or just 8 hrs per day?

tks

[|squee|]

Turn it on as long as your lights are on. Leaving it 24/7 will be just a waste of CO2 because plants don't need CO2 when the lights aren't turned on/photosynthesizing.

[ah tan]

noted. tks

[bryan]

If you are using a solenoid regulator, plug it to the same timer as your lights.

[taz_boy]

hi all,

should i on my CO2 24/7 or just 8 hrs per day?

tks

if u dont wish to buy a solenoid.. u can manually open and close the co2 tank main valve [but care not to use brute force to tighten it] like what i'm doing all the while. like that. my 3ltr co2 tank can tahan 6-8months running at 3bps for 6hrs/day

[mr loach]

will the swing in ph from turning off the co2 have adverse effects on the fish?

[|squee|]

Although that has been considered, frankly I've never seen any effect on my fish.

[StanChung]

will the swing in ph from turning off the co2 have adverse effects on the fish?

On the contrary, there is no swing in pH. It is a gentle rise in pH!