Closed Loop Options for a 40 Breader

evilc66 · Oct 14, 2008

I'm setting up a 40B here soon, and wanted to get some opinions on different ways to set up a closed loop.

I was initially planning on having a single supply bulkhead on the back wall, and pump that through an SCWD (3/4") to two bulkheads near the top corners of the tank. Split off with locline/pvc from that point. Simple, but seems to be effective.

Then I start reading a little into bulkheads coming up through the bottom of the tank for jets pointed towards the rockwork. What is the real advantage to this method?

I'm really open to any ideas and suggestions for this, but I need some decent reasoning for some of these opinions.

So, what do you suggest?

Zombo · Oct 14, 2008

I think you need more LEDs first. :D

Seriously, the only advantage I see in having returns lower/behind rock would be to keep detritus suspended in the water column so your surface skimming could pull it out and into the mechanical filtration media. I'd be paranoid about having returns through the actual bottom of the tank -- check valves can FAIL!