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Thread: Building 2nd Pool - Waterfall question

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    First Pool Judith's Avatar
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    Question Building 2nd Pool - Waterfall question

    We've moved and are building our second pool. We're building the exact same pool as the first as far as size, shape etc. However, this pool will have an actual waterfall using the huge rocks in our backyard. We wanted to seal the rocks (top and bottom) but the pool guy said that the mason suggested we wait until the waterfall is constructed and then seal it. "Sealing it before may compromise the mortar when he's building it."

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    Judith and Brian D
    16,000 gal; IG Quartscape; Cartridge Jandy CV460 (150 gpm Max); Jandy Pro 2.0 Variable
    Polaris PB460 3/4 booster; Polaris 280 Cleaner; In Line Chlorinator Tri-Chlor (don't use it) Ozonator
    Fill Date 11/11/2013

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    Mod Squad pooldv's Avatar
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    Re: Building 2nd Pool - Waterfall question

    Sounds logical to me.
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    harleysilo's Avatar
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    Re: Building 2nd Pool - Waterfall question

    Mee too, I bet the mortar doesn't stick well to the sealed surface.

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    First Pool Judith's Avatar
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    Re: Building 2nd Pool - Waterfall question

    I have not but I will research that. Our last pool hand a very simple waterfall. Thank you both!
    Judith and Brian D
    16,000 gal; IG Quartscape; Cartridge Jandy CV460 (150 gpm Max); Jandy Pro 2.0 Variable
    Polaris PB460 3/4 booster; Polaris 280 Cleaner; In Line Chlorinator Tri-Chlor (don't use it) Ozonator
    Fill Date 11/11/2013

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    JoyfulNoise's Avatar
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    Re: Building 2nd Pool - Waterfall question

    Please make sure the PB uses a proper waterfall pump for the application. Too often PB's try to just slap on another pool pump to the build and pool pumps are high head (pressure) pumps while waterfall pumps are designed for open-pipe (low head), high flow rate applications. Take it from my experience where our pool's waterfall was installed with a GIANT 3HP Pentair WhisperFlo pump...it is way too powerful and I had to add extra shutoff valves to it to create enough back pressure to keep the pump from cavitating. Also, don't be talked into just splitting off some flow from the main pool pump to make the waterfall happen. If they do that, more often then not they have to rob so much water flow from the pool pump that very little water goes through the returns. The best design is a separate set of wall intakes to a properly sized waterfall pump with all the return water sent to the waterfall. They can even add an additional wall return in case you want to split the flow from the waterfall to a wall return to get the exact amount of splashiness and sound you like.

    As for the rocks being sealed, I would agree with the recommendation to wait BUT, honestly, I have had my waterfall for years now with a salt pool and the stones are unsealed and there is no issue.
    Matt
    16k IG PebbleTec pool, 650gal spa, spillway and waterfall, 3HP IntelliFlo VS / 1.5HP WhisperFlo, Pentair QuadDE-100 filter, IC40 SWCG, MasterTemp 400k BTU/hr NG heater, KreepyKrauly suction-side cleaner Dolphin S300i robot, EasyTouch controls, city water, K-1001, K-2006 and K-1766 test kits, Mannitol test for borates

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