Two medium setups or one big one. . .

[MoshJosh]

Thinking about a future set up. Original plan was 2 40 gallon tanks and 2 20 gallon sumps. But alternatively could do 1 80 gallon tank with a 40 gallon sump. Goal is to grow all the corals!

What would you do?

 

[X-37B]

80g then you can/will setup a smaller frag system down the road.
Trust me an 80 will seem small in no time. Think 120 with 40breeder sump if you can make it work.
They all get filled up faster than you think.