this tank was up and running for a while, then taken down, now back up recently, there is just a baffled 20L sump under the tank with heater pumps and skimmer
i use only return jets and outside-plumbed looped-pump for water movement, i dont like the way powerheads look in tanks, and the through the glass drive ones are spendy
also i added a heavy duty chain and turnbuckles to tension on each side that goes from the side of the back of the stand diagnal up to the studs because i didnt %100 trust the stand not to collapse backwards some day lol (and when i asked on here i was told not to build a stand like that, it would probably fail)