Help With Water Reverse Siphone

danfish · 01-31-2007, 06:49 PM

i have an aga rr 120 gal with dual megaflow tank. when i shut off the power water keeps reverse siphoning back into my sump eventually filling it up and overflowing, i read somewhere that drilling holes in the return would stop the siphone by releasing air into the return. can anybody pls show me where to drill these hole (pls post pics bc if i drill in the wrong place is not fixable) or is there anything else i can do besides drilling holes. thx in advance

JFK_Jr · 01-31-2007, 07:00 PM

The holes are the best way... mine are drilled just below the water line. 1/8" hole. Check valves are notorious for failing.

danfish · 01-31-2007, 07:03 PM

Quote:

Originally Posted by JFK_Jr

The holes are the best way... mine are drilled just below the water line. 1/8" hole. Check valves are notorious for failing.

how many holes to drill per return? thx

JFK_Jr · 01-31-2007, 07:05 PM

Quote:

Originally Posted by danfish

how many holes to drill per return? thx

All you need is one small hole in each return.

Witfull · 01-31-2007, 07:15 PM

i always go with 2,,,if one clogs or a snail is on it~

cioutlaw · 01-31-2007, 11:26 PM

Do you have the overflow plumbing from AGA? If so the 90deg fittings that go at the top of the pipe have holes pre drilled. They will be drilled in the throat of the fitting.

saltyfishtanks · 02-01-2007, 11:48 AM

check valve here but it needs to be checked regularly or disaster will happen and when it does it will be on the rug!!

this one's coming from experiece here and it does suck

i have been thinking bout the see through check valves but been on a tight budget lately so reef spending is at a hault

i like the sounds of the drilled holes gonna look into that more karma to ya JFK

mps9506 · 02-01-2007, 02:05 PM

Out of curiosity what size sump do you have?
Cioutlaw is correct about the AGA plumbing have holes in the elbows. This should prevent siphoning through the return plumbing. However you usually still need enough room in your sump to hold at least 5-10 gallons of water to make up for water in the plumbing, above the slots in the overflow etc...

01-31-2007, 06:49 PM	#1 (permalink)
danfish Midas Blenny Join Date: Oct 2006 Posts: 85 View Gallery Karma Komment	Help With Water Reverse Siphone i have an aga rr 120 gal with dual megaflow tank. when i shut off the power water keeps reverse siphoning back into my sump eventually filling it up and overflowing, i read somewhere that drilling holes in the return would stop the siphone by releasing air into the return. can anybody pls show me where to drill these hole (pls post pics bc if i drill in the wrong place is not fixable) or is there anything else i can do besides drilling holes. thx in advance

01-31-2007, 07:00 PM	#2 (permalink)
JFK_Jr Golden Moray Join Date: May 2006 Location: Hallandale Beach FL Posts: 2,108 View Gallery Karma Komment Add yours!	Re: Help With Water Reverse Siphone The holes are the best way... mine are drilled just below the water line. 1/8" hole. Check valves are notorious for failing. __________________ *JFK_Jr's 150 Gallon Starphire*

01-31-2007, 11:26 PM	#6 (permalink)
cioutlaw Harlequin Tuskfish Join Date: Jan 2006 Location: Champaign Illinois Posts: 940 View Gallery Karma Komment	Re: Help With Water Reverse Siphone Do you have the overflow plumbing from AGA? If so the 90deg fittings that go at the top of the pipe have holes pre drilled. They will be drilled in the throat of the fitting. __________________ My 120gallon chronical My 225 gallon chronical My website

02-01-2007, 11:48 AM	#7 (permalink)
saltyfishtanks Sea Pen Join Date: Jun 2006 Location: upstate new york Posts: 307 View Gallery Karma Komment	Re: Help With Water Reverse Siphone check valve here but it needs to be checked regularly or disaster will happen and when it does it will be on the rug!! this one's coming from experiece here and it does suck i have been thinking bout the see through check valves but been on a tight budget lately so reef spending is at a hault i like the sounds of the drilled holes gonna look into that more karma to ya JFK __________________ 48x24x24 120gallon, 2 seio 1500, 1200gph little giant return, 4 icecap t5 w/giesmann bulbs, aquamedic 500w heater/digital controller, sump/refuge is bioballs to chetomorpha to live rock with about 3-4 inches of crushed coral bottom

02-01-2007, 02:05 PM	#8 (permalink)
mps9506 They misunderestimated me Join Date: Jan 2004 Location: Charlotte and Wilmington, NC Posts: 6,862 View Gallery Karma Komment	Re: Help With Water Reverse Siphone Out of curiosity what size sump do you have? Cioutlaw is correct about the AGA plumbing have holes in the elbows. This should prevent siphoning through the return plumbing. However you usually still need enough room in your sump to hold at least 5-10 gallons of water to make up for water in the plumbing, above the slots in the overflow etc... __________________ Mike "The Bandwith Bandit" Help Build Reefpedia Premium Membership Available! Support Reef Sanctuary Sponsors

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