Bulkhead and overflow suggestions for 40g cube

See this is where I'm lost. Might do a 45 in each corner and direct them and do what you said to adjust flow with ball valves.


Qbaby

[spit.fire]

2x1'' drains, 2x 3/4" returns, gate valve on one of the drains

speedwave dc 790 return

pretty much what i ran on my 2'x'2x18" cube without a problem