UPDATE (That'll make Drew happy
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)
I had to make a modification to the drain from the fuge. If you remember I had a hose connected to the outlet that went straight downhill to the sump. If you didn't remember here's a reminder.
The problem was that the water falling over the weir caused bubbles and they immediately went down to the sump and as the intake for the pump was in the same chamber, they got sucked in. I tried balancing the flow into the fuge by closing the ball valve that feeds it from the main pump manifold. I closed it enough such that the overflow box got about two thirds full. The bubbles did not make it to the bottom and hence to the sump. The only problem was that the water flow through the fuge was too high.
Here's how I modified the drain.
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Look familiar? It's basically a Durso without the bleed hole. So when the pump shuts off the water in the overflow box syphons into the sump. The drain restarts okay but I don't like the fact the all the air when the syphon finishes stays in the sump and gets pulled into the pump intake. So I'm off to Lowes again today (so what's new
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) to pick up a tee and a cap. I will replace the female adapter with a tee and a cap on top into which I will add a John Guest fitting and a length of 1/4" hose that will be submerged just below the water line that I want to maintain in the overflow box. This way when the pump shuts down the syphon will break as soon as the water level uncovers the hose and allow air in.
As I mentioned in an earlier reply, the skimmer venturi and the gasket arrived and so I could finish the plumbing. Here's what it looks like.
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Here's the massive amount of micro bubbles it creates.
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Impressive huh. :eek2: I made up some supports for the rock in the fuge. I glues 1/2" rod to 1/4" sheet. The rods are 3" long and I cut a point on the end on my bandsaw. I have two 4x4 plates at the back of the tank which have 5 rods and a 4x12 at the front with 12 rods. Here's the big one.
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Here's the fuge with sand, rock, and water. I got some sand from an established tank to seed the bed (thanks Frank).
I ordered some sand sifting little buggers from Drs. Foster & Smith. They should arrive in a few days.