Return Questions

[Editour2]

1) I have a single return pump returning water to the main display via two flexible ball socket tubing. The split returns come off individual threaded 3/4" elbows which each has a small hole to break siphoning in case of a power failure. The problem is that water is also shooting out of these small holes, (although not heavily). The water is entering the tank or the overflow and is noisy. Can I: a) eliminate 1 of the 2 holes on the return elbows, (without creating a problem), since they are all connected? or b) As an option use a checkvalve or c) replace the elbows, (with elbows without air holes), and drill small holes in the flexible ball sockets slightly below the water line.

2) I have my phosban reactor drawing water from my overflow, (which holds about 14 gallons of water, due to my tank being a converted tenecor simplicity plus system, the back 4" used to house a wet-dry system), and emptying into my sump. I am using plastic/vinyl hoses, (1/2"). In case of power failure I was again concerned about siphoning, (which did occur when I shut the power), & possibly overflowing the sump. There are no elbows or pvc involved here, I made a small hole below the water line so that when the power shuts off I no longer get a siphon effect and that seems to have done the trick.

Any suggestions regarding #1 & #2 would be welcome.
thanks,
Frank

 

[bertoni]

I'd choose option C. Check valves don't seem reliable enough for me.

I'd run the PhosBan reactor with a small pump, out of and then back into the sump. That avoids issues with an animal or some debris blocking the anti-siphon hole. I'm on the cautious side, though.

 

[demonsp]

Question #1 You drilled the holes in the wrong place. Few segments lower and with the return pump in only a few gallons then all that happens is the tank fills with bubbles nad hte pump whines and could over heat. Good reason for steady top off.

Question #2 . Not really sure but a overflow box would solve that and depending on the stock , age , and bio filtration is the wet dry could cause more harm then good.

 

[Aquarist007]

<a href=showthread.php?s=&postid=11443005#post11443005 target=_blank>Originally posted</a> by demonsp
Question #1 You drilled the holes in the wrong place. Few segments lower and with the return pump in only a few gallons then all that happens is the tank fills with bubbles nad hte pump whines and could over heat. Good reason for steady top off.

Question #2 . Not really sure but a overflow box would solve that and depending on the stock , age , and bio filtration is the wet dry could cause more harm then good.

Can you flip the loc lines so that the hole is under the surface of the water

if not take out the loc lines glue the whole shut and redrill on the underneath surface of them

 

[Aquarist007]

<a href=showthread.php?s=&postid=11442591#post11442591 target=_blank>Originally posted</a> by bertoni
I'd choose option C. Check valves don't seem reliable enough for me.

I'd run the PhosBan reactor with a small pump, out of and then back into the sump. That avoids issues with an animal or some debris blocking the anti-siphon hole. I'm on the cautious side, though.

suggestion illustrated: