It's a 30 gal
but I have 3 fish, 2 clowns And a yellowtail damsel. I use red sea salt and I always test before I douse anything. The salt mix is a little low where I want the ca
to be so I douse it a little to maximize growth along with mag. Mag is always good but ca
seems to get used up more. I used to use use red sea pro but it made my alk
too high so I switched to regular redsea since it had a lower alk
count then the other salts. I add the new water slowly into the tank over a period of an hour or 2.