Return Plumbing

[Jedd Johnson]

I recently picked up a used 93 gallon Marineland rimless cube. The aquarium is drilled with 4 return lines on the bottom half of the tank. I've never had a drilled aquarium or used a sump. Is this going to cause problems, such as siphoning? If so what are my options?

 

[BadFish619]

Just looks like you'll have 4 returns, shouldn't be a problem. Looks like it will have good flow and no dead spots! Sump will be your new favorite filtration system. So many options and room to store unsightly things in the tank like heaters.

 

[jtl]

Hope you have a lot of room in your sump for drain back from the DT when you lose or turn off the pump.

 

[BadFish619]

Hope you have a lot of room in your sump for drain back from the DT when you lose or turn off the pump.

Maybe he could plug those 2 bottom returns

 

[Silver14SS]

You could add check valves to keep it from draining when the return pump is off.

 

[smh254]

Yes use a check valves.
https://www.bulkreefsupply.com/spears-true-union-check-valve.html

 

[High ICP]

Plug them

Or use them for a closed loop

There is no way those can be made flood proof

 

[High ICP]

And that is pretty thin glass for 90 gallons

You are more brave than me

 

[Jon Fishman]

Just have to plumb some sort of

And that is pretty thin glass for 90 gallons

You are more brave than me

I tried googling, and of course there was no readily available answer to the thickness of the glass, but I found a lot of concerns about micro-bubbles in the seems, but apparently they don't fail