What size sump

[Zos4me]

I recently started a 75 gallon build. I bought a synergy shadowbox and drilled the tank. My question is what size sump would be adequate for this. I want to probably have a mixed tank with lots of zoanthids and a few small damsels or something. Maybe other types of corals as my experience level grows.
thanks for the help

 

[AshwinRavi]

I recently started a 75 gallon build. I bought a synergy shadowbox and drilled the tank. My question is what size sump would be adequate for this. I want to probably have a mixed tank with lots of zoanthids and a few small damsels or something. Maybe other types of corals as my experience lever grows.
thanks for the help

I have a 4ft 75G, currently I am using a 20G long as sump, was planning to upgrade to 29G or 40G when petco has $1 a gallon sale again.

 

[Zos4me]

ok great thanks. I love petco for that sale thanks for your input