How much?

[jthetang]

I'm have a 20 gallon mini reef tank and I was wondering how many watts should I have for the lr and my corals?

 

[lordofthereef]

1 55w actinic, 1 55w 50/50, and 1 55w 10000k.
that sounds good to me.

 

[ebeckels]

well...what types of corals do you want? Mushrooms? SPS corals? You're not gonna need all that light if you just want some shrooms and other "esaier" corals.