fun fact

i just found out today that algae when the lights are off uses oxygen and produces carbon dioxide unlike when the lights are on and it uses CO2 to make O2. at night the added CO2 will lower your ph so if you have alot of algae in your tank watch your ph.

 

good to know thanks id k+ you but im on my phone n its not letting me

 

haha its fine

 

Hence the opposite photoperiods of display tank/refugium...8)

 

exactly

 

thanks for the info k+

 

This is also why an open top design helps too. It allows for the CO2 to be expelled easier at night.

 

So does that mean that if your fuge is 24hrs lit that there will be adverse effects?

 

if you turn your lights off there will be if you leave them on it will use CO2 and put out O2

 

IDK about adverse effects, however 24 hr lighting isn't natural. Plants and algae need at least 6 hrs of dark for their maintenance functions.