Need help...confused

[jasutton]

OK so i have an existing 20 Long pretty much stocked. It has a HOB CPR skimmer and HOB CPR Fuge...also 2 MJ600's runnin for flow. I am getting tired of all the ugly pumps.

SO my question:
I want to get a sheet of black acrylic and make an in tank overflow for the HOB skimmer and fuge...i dont want to drill or anything as i already have the HOB stuff. I would then use the two MJ's and Loc-line to pull water out from behind the fuge. I know it wouldnt be terribly efficient and some clean water will be recycled back into the skimmer, but my tank is only a 20 L and i think the skimmer can handle a little inefficiency. My main fear is matching the inflow from the overflow teeth to the outflow of 4 pumps (skimmer (MJ1200), fuge (rio 400) and the 2 MJ 600 for return). what do you guys think??

i will take any and all advice!!

Jamie

 

[PSam]

I'd take out the skimmer, personally. Ever since I started reefs under 55 gallons, I quit skimming. No problems, no phosphates, nothing. Plus, you have a refugium.

You could use the MJ1200 you have with a SCWD from your fuge, then you have 2 nice alternating currents? Just an idea.

 

[schiavonir]

I think that's what the height (depth) of the teeth is for. The water will adjust itself to a certain level between the teeth depending on the flow rate. So, for example, I'm looking at the overflow on my nano. The water level is halfway up the teeth. If I had a bigger return pump, the water level against the teeth would be higher, and a smaller pump would yield a lower water level.

So, I think you can cut the teeth to a reasonable depth, but if the flow is so much that you are overflowing OVER the teeth, then you cut them deeper. Or, depending on your design, maybe you could cut more teeth.

But remember, the deeper you cut the teeth, the lower your overall water level will be. So cutting more teeth, if possible, would be better then cutting them deeper.