My 300 gallon Drop Off Reef Tank Build

[Dez]

Originally Posted by lockrookie

just got a bit od a concern as far as your closed loop goes..... you donthaveany shut off valves incase of pump problems that cansee... you unhook that thing and drainyour tank... unless i just dont see it.

I think I see a check valve in each line. But I wouldn't trust a check valve either. But at least it would take a long time to drain the tank out with a leaky check valve.