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Thread: Stenner Pump White Stuff

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    poolhound's Avatar
    Join Date
    May 2008
    Elgin, SC

    Stenner Pump White Stuff

    I just replaced my liner (looks great) and started up the filter to balance water chemistry. I turned on my Stenner Pump (3GPD) to run full time and marked the bleach level in the tank. When I checked 12 hrs later the tank level had not changed. T unhooked the output tubing, turned the pump on and there was no flow. I looked at the weighted suction strainer and what I remembered to be black was now white. After a good cleaning in hot water with a toothbrush I reinstalled and it is now pumping.
    I switched from a Liquidator to the Stenner Pump last spring and reused my Liquidator Tank (cleaned) for supply tank. I had no problems and was very happy with the Stenner performance. At the end of my season (Oct 2017) I set the Stenner to run 1hr/day for the winter. A few weeks later I noticed my pool water level dropping rapidily and turned off all pumps. My 14 year old liner gave up the ghost and I replaced it this Feb.
    My question is, is White Stuff a typical problem with Stenner bleach tanks? I painted my Liquidator tank white and did see white stuff when operating as the Liquidator but it never plugged the valves.
    24000gal IG, VL, 1.5 HP, Pentair 60/60D Sand 325#, BBB, Stenner45MHP2 (Replaced Liquidator), Dolphin M400

  2. Back To Top    #2

    Join Date
    Dec 2014
    Riverside California

    Re: Stenner Pump White Stuff

    The white stuff is Salt buildup. Each year, I replace the Tube (the flexible one driven by the rollers), the duckbill check valve and injector, and inspect the 1/4" black tubing. I also inspect the pick up filter, and replace if I cannot clean it well enough due to salt buildup. The Duckbill check valve is susceptible to clogging from salt and should be inspected each three months. I love my Stenner pump and it saves me a bunch of time hauling a lot of gallon containers of bleach to the pool. Also, when I go on vacation, I can be confident that my pool will get the bleach it needs when I am gone (about .8 gallons per day during the Summer in my SO Cal deserts heat).
    38000 Gal, IG, Plaster, 20' x 40' x 10', Attached Raised Spa, Intelliflo VS 3 HP (011018), Pentair Quad DE 60 Filter, Raypak (Rheem) 400,000 BTU (407a low Nox), Easy Touch 8 upgrade, Screenlogic 2 with wireless, IS-4 Spa Side Remote, Stenner 45MPHP10 w/15 gal tank, Intellibrite 5g (3), Dolphin Triton Plus robot with PRO remote, Water Tech Catfish handheld vacuum for spa, TF100 with SpeedStir.

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