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Thread: Need advice for airtight vacuum hose for siphoning a green pool

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    Need advice for airtight vacuum hose for siphoning a green pool

    Any ideas on how to make an airtight connection of two
    50-foot long 1.5" diameter pool vacuum hoses for siphoning a green pool?

    This isn't working (it's leaking & therefore not siphoning):
    Silicon Valley, 38,500 gallons in-ground plaster; Sta-Rite System 3 Model S8M150, 259 sqft cartridge 25022-0203S + 191 sqft cartridge #25021-0202S = 450 sqft filter@0.28gpm/sqft = 125 gpm@50psi max. Three 220v Sta-Rite Max-e-Glas II pumps {AO Smith QC1102 1.0x1.65SF for filter + cleaner; SQ1152 1.5x1.47SF for spa jets; square 48Y flange}. 13 Fafco 12'x4' professionally installed "Revolution" solar heating panels + Raypak RP2100 P-R 405A-EP LPG 399,000/hour heater + Compool Lx3600 controller + Infinity 4000 automatic pool cover (120v 3/4 HP motor); both skimmers are NOT filtered & serve only as intake for 9-port water valves (aka cleaner heads) controlling fifteen Paramount PCC2000 3" self-cleaning jets with the optional Debris Containment Canister.

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    Mod Squad jblizzle's Avatar
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    Re: Need advice for airtight vacuum hose for siphoning a green pool

    Are you sure it needs to be air tight? It only needs to be air tight above the water level. So if one hose can be in the pool and up over the wall and then down near the ground, the other could be used to direct the flow where you want ... depends on how long your hoses are.
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    Re: Need advice for airtight vacuum hose for siphoning a green pool

    Quote Originally Posted by jblizzle View Post
    Are you sure it needs to be air tight? It only needs to be air tight above the water level. So if one hose can be in the pool and up over the wall and then down near the ground, the other could be used to direct the flow where you want ... depends on how long your hoses are.
    The contraption I use to connect the two hoses works fine for vacuuming, but, the connection is in the water when I'm vacuuming.
    But, when I siphon, the connection, by sheer necessity, must be on the pool deck, hence, in the open air.

    Each of the two 1.5-inch diameter vacuum lines works fine as a siphone all by itself:


    But, now that I'm on the deep part of the pool, the hose has to climb ten feet out, and then snake another twenty or so feet flat, and then slope down another thirty or so feet, so I have to combine the two hoses to get 100 feet.
    Every time I try to siphon with the two vacuum hoses connected, it sucks air instead.

    Right now, I'm using a 100 foot long 3/4" diameter garden hose:


    But, the flow out of the garden hose is downright puny, compared to the vacuum hose:


    Plus, it gets all clogged with scum much easier than did the vacuum hose:


    If I can get the vacuum hoses to connect without leaking air, the siphoning will take out most of the scum with the water:


    So, the key problem now is how to connect two 1.5" diameter vacuum hoses to make an airtight coupling, so I can get back to the fast unclogged siphoning!
    Silicon Valley, 38,500 gallons in-ground plaster; Sta-Rite System 3 Model S8M150, 259 sqft cartridge 25022-0203S + 191 sqft cartridge #25021-0202S = 450 sqft filter@0.28gpm/sqft = 125 gpm@50psi max. Three 220v Sta-Rite Max-e-Glas II pumps {AO Smith QC1102 1.0x1.65SF for filter + cleaner; SQ1152 1.5x1.47SF for spa jets; square 48Y flange}. 13 Fafco 12'x4' professionally installed "Revolution" solar heating panels + Raypak RP2100 P-R 405A-EP LPG 399,000/hour heater + Compool Lx3600 controller + Infinity 4000 automatic pool cover (120v 3/4 HP motor); both skimmers are NOT filtered & serve only as intake for 9-port water valves (aka cleaner heads) controlling fifteen Paramount PCC2000 3" self-cleaning jets with the optional Debris Containment Canister.

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    gtemkin's Avatar
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    Re: Need advice for airtight vacuum hose for siphoning a green pool

    I would just butt the 2 hose ends together and carefully wrap some electrical tape around the joint. If you do it with care, you'll have an air tight joint. Obviously you won't want to pull or disturb it much but for one time use it'll work fine.
    21K gal 16' x 40' in-ground pool built 1959, old school with Jacuzzi bronze pump, American Products 24" Sand Filter & Americana Multiport valve, Jandy Lite2 millivolt heater, Coverstar cover, and classic Kreepy Krauly.

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    Richard320's Avatar
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    Re: Need advice for airtight vacuum hose for siphoning a green pool

    Take some measurements and go browse the plumbing aisle at the hardware store. Somewhere there's got to be a plastic pipe or coupling or sink tailpiece with the right diameter. For that matter, even a piece of copper pipe, if it's the right size.

    If that hose barb fits snug, saw the section you need out, ram it in both ends, and duct tape it all together.

    Cut a bicycle inner tube into a piece 4" long and use it as a cuff over the two couplers.

    Purchase a hose mender http://www.inyopools.com/Products/07501352021992.htm

    I'm out of ideas.
    16K freeform gunite with spa; Pentair 4000 DE filter; Century Whisperflow 1 HP; Pentair Minimax heater.
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    Beens's Avatar
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    Re: Need advice for airtight vacuum hose for siphoning a green pool

    I thought it wasn't good to leave a pool drained like that?

    I don't know much though lol

    I hope you can get it figured out!
    18' x 48" (42" water depth) Intex Metal Frame 6,700 Gallons
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    Re: Need advice for airtight vacuum hose for siphoning a green pool

    Quote Originally Posted by gtemkin View Post
    I would just butt the 2 hose ends together and carefully wrap some electrical tape around the joint. If you do it with care, you'll have an air tight joint. Obviously you won't want to pull or disturb it much but for one time use it'll work fine.
    I tried LOTs of ways to connect the two 1.5" vacuum hoses in an airtight way, but all failed since they let in air (the connection is, by necessity, above the pool, for a siphon to work). But, I eventually got the combination of the garden hose and old-fashioned bailing to work out most of the way:


    Quote Originally Posted by Richard320 View Post
    Take some measurements and go browse the plumbing aisle at the hardware store. Somewhere there's got to be a plastic pipe or coupling or sink tailpiece with the right diameter. For that matter, even a piece of copper pipe, if it's the right size.

    If that hose barb fits snug, saw the section you need out, ram it in both ends, and duct tape it all together.

    Cut a bicycle inner tube into a piece 4" long and use it as a cuff over the two couplers.

    Purchase a hose mender http://www.inyopools.com/Products/07501352021992.htm

    I'm out of ideas.
    This was the best attempt, by far, but even it failed to develop enough suction to siphon the last few hundred gallons of muck:



    Quote Originally Posted by Beens View Post
    I thought it wasn't good to leave a pool drained like that?

    I don't know much though lol

    I hope you can get it figured out!
    I did. Sorry for not updating this thread.

    It wasn't easy because of the mud left behind in the deep end:

    I basically bailed the water into a big bucket, and manhandled that big bucked out of the pool:

    What was left was a powdery dirty dust, that took days of washing, bailing, and drying to get all out:

    Finally, the pool floor was clean in the deep end:

    I removed the drain covers and popup heads to clean them out also:

    Then, I started filling from my garden hose:

    Since the well is a very slow one, I could only put in about a thousand or two thousand gallons a day:

    Slowly, but surely, in a matter of weeks, the pool is finally filling up:
    Silicon Valley, 38,500 gallons in-ground plaster; Sta-Rite System 3 Model S8M150, 259 sqft cartridge 25022-0203S + 191 sqft cartridge #25021-0202S = 450 sqft filter@0.28gpm/sqft = 125 gpm@50psi max. Three 220v Sta-Rite Max-e-Glas II pumps {AO Smith QC1102 1.0x1.65SF for filter + cleaner; SQ1152 1.5x1.47SF for spa jets; square 48Y flange}. 13 Fafco 12'x4' professionally installed "Revolution" solar heating panels + Raypak RP2100 P-R 405A-EP LPG 399,000/hour heater + Compool Lx3600 controller + Infinity 4000 automatic pool cover (120v 3/4 HP motor); both skimmers are NOT filtered & serve only as intake for 9-port water valves (aka cleaner heads) controlling fifteen Paramount PCC2000 3" self-cleaning jets with the optional Debris Containment Canister.

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