Originally Posted by TimaT
I want to get anthias fish (jumpers) and also keep my evaporation down a little.
Would you recommend a lid?
What are my options?
does it have an effect on the lighting? will it slow down the par?
will there be a lot of salt creep?
Will it affect my PH?
any tips/advise will be nice.
Depending on the size of the tank, you can buy lids at different places or you can make your own. Some use glass tops while others prefer screens.
The glass ones will slow, but not inhibit gas exchange. They do not hamper par and lighting, but if not cleaned can. There can also be salt creep if there is a trickle of water into the surface, but can be managed by regularly cleaning the lids.
Your ph would see minor effect, as it can be effected by the gas exchange on the surface.
Personally, I prefer an open tank for as much gas exchange as possible and a cleaner look. I will eventually put a top on my tank, but it will be in the form of a canopy rather than a glass top or screen.