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Thread: Newbie - My Sheer Desent Waterfall is not coming out even

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    Newbie - My Sheer Desent Waterfall is not coming out even

    Hi all,

    This is my first post on this forum and was looking for some help.

    I have a sheer descent waterfall in my pool and it seems like all of the sudden, the water is only coming from the middle outward, whereas both of the "ends" do not have water coming out if it.

    Here is what I have done to try to correct.

    1. Clean cartridge filters with a degrease letting them soak over night.

    2. Pulled the valve apart, no issue.

    3. Put a credit card in the slots to see if they had any debris blocking the water and there was not.

    4. Skimmer filters emptied.


    The vacuum works without any issues.


    If you open the waterfall valve wide open water will come out almost 100% of the fall, but it is nowhere near the nice even flow that the fall had prior.

    Hopefully, someone get give me some direct. BTW, this is an ozone pool and less then one year old.


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    Join Date
    Jun 2010
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    Toms River, NJ
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    Re: Newbie - My Sheer Desent Waterfall is not coming out eve

    Just guesses:
    A partial blockage of the plumbing feeding the waterfall?
    Will ozone react with the materials the fall or plumbing are made of in an undesireable way?
    Something in the pump skimmer basket?
    Pump nut running at full capacity due to premature wear?
    18'x24' (10,000 gal) above ground pool, 19" Proline sand filter (45 GPM), Jacuzzi 1.5 HP 2 speed pump

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    Mod Squad Bama Rambler's Avatar
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    Re: Newbie - My Sheer Desent Waterfall is not coming out eve

    Something partially blocking the impeller.

    What is your filter pressure running now and is it the same as when it was working correctly?
    Dave J. TFP Moderator
    24' x 52" Round AGP. 2hp/¼hp SPL Power-Flo 2-speed pump. 200sqft Waterway Cartridge Filter. 45MHP2(3GPD) Stenner Peristaltic Pump
    Pool School ----- Pool Math ----- TF-Test Kit

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    Newbie - My Sheer Desent Waterfall is not coming out even

    Quote Originally Posted by Bama Rambler
    Something partially blocking the impeller.

    What is your filter pressure running now and is it the same as when it was working correctly?
    The pump shows about 12 pressure which hasn't changed to the best of my knowledge.

    Is there an impeller is the sheer desent or do you mean the one in the pump

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    Mod Squad Bama Rambler's Avatar
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    Re: Newbie - My Sheer Desent Waterfall is not coming out eve

    The pump impeller. It doesn't take much of a clog to impair the flow through the desent.
    Dave J. TFP Moderator
    24' x 52" Round AGP. 2hp/¼hp SPL Power-Flo 2-speed pump. 200sqft Waterway Cartridge Filter. 45MHP2(3GPD) Stenner Peristaltic Pump
    Pool School ----- Pool Math ----- TF-Test Kit

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    Newbie - My Sheer Desent Waterfall is not coming out even

    Quote Originally Posted by Bama Rambler
    The pump impeller. It doesn't take much of a clog to impair the flow through the desent.
    Any easy way to check?

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    mas985's Avatar
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    Re: Newbie - My Sheer Desent Waterfall is not coming out eve

    With the pump off, open the pump lid, remove the basket, at the bottom there is an impeller inlet hole. Reach in and see if anything is stuck in there.
    Mark
    Hydraulics 101; Pump Ed 101; Pump/Pool Spreadsheets; Pump Run Time Study; DIY Acid Dosing; DIY Cover Roller
    18'x36' 20k plaster, MaxFlo SP2303VSP, Aqualogic PS8 SWCG, 420 sq-ft Cartridge, Solar, 6 jet spa, 1 HP jet pump, 400k BTU NG Heater

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    Newbie - My Sheer Desent Waterfall is not coming out even

    Quote Originally Posted by mas985
    With the pump off, open the pump lid, remove the basket, at the bottom there is an impeller inlet hole. Reach in and see if anything is stuck in there.

    Will try, thank you

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    Re: Newbie - My Sheer Desent Waterfall is not coming out eve

    I am having the same issue... Please tell me if you ever figured it out.
    I have disassembled, cleaned, changed filers, checked impeller, etc and nothing has changed. the waterfall used to be great, and now only comes out of the middle of the sheer decent... if I turn it on all the way it shoot half way across the pool, but still not quite full width...
    any help appreciated...

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    mas985's Avatar
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    Re: Newbie - My Sheer Desent Waterfall is not coming out eve

    Has your filter pressure changed?

    but still not quite full width
    This could be due to something going on in the discharge at the waterfall. Scale or maybe something on the edge?
    Mark
    Hydraulics 101; Pump Ed 101; Pump/Pool Spreadsheets; Pump Run Time Study; DIY Acid Dosing; DIY Cover Roller
    18'x36' 20k plaster, MaxFlo SP2303VSP, Aqualogic PS8 SWCG, 420 sq-ft Cartridge, Solar, 6 jet spa, 1 HP jet pump, 400k BTU NG Heater

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    Join Date
    Jul 2015
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    Blue bell, PA
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    Re: Newbie - My Sheer Desent Waterfall is not coming out eve

    This is my first step. We have sheer descents in our pool and now need to replace one as it is cracked. How do you measure for replacement?

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