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Thread: Waterfalls - effects on FC, pH, energy use

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    Waterfalls - effects on FC, pH, energy use

    I know my neighbor runs their waterfall most of the day, but ours is much bigger and I suspect uses a lot more energy. I have noticed the algae that tends to grow there and suspect that running the water through it more rather than less is the key to keeping that algae-free and thus the pool as well. I have already noticed that the pool level is lower, so I guess I am getting either a lot of evaporation from all those rocks in the bright hot sun or the slight dampness I notice in the joints between some stones in the back may be more important than it looks.

    1 - does running the waterfall cause chlorine to break out as a gas and be lost more rapidly?

    2 - my TA is still 170; will running the waterfall more often cause the pH to stay high?

    3 - The waterfall pump is "Centurion Switchless" 2 HP as far as I can tell. Is this an expensive motor to run?

    4 - Do you notice any significant evaporation losses with your waterfall? or do I have a leak in the rocks?
    23,000 gallon in ground pool with rock waterfall and spillover spa, Aqualink control system, Polaris 380 cleaner, Purex Triton Clean&Clear Plus cartridge filter. Located in The Woodlands, Texas.

    Pool owner since Nov 2008, Trouble Free since April 2009. Happy to help when I can.

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    mas985's Avatar
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    Re: Waterfalls - effects on FC, pH, energy use

    See answers below:

    Quote Originally Posted by anonapersona
    I know my neighbor runs their waterfall most of the day, but ours is much bigger and I suspect uses a lot more energy. I have noticed the algae that tends to grow there and suspect that running the water through it more rather than less is the key to keeping that algae-free and thus the pool as well. I have already noticed that the pool level is lower, so I guess I am getting either a lot of evaporation from all those rocks in the bright hot sun or the slight dampness I notice in the joints between some stones in the back may be more important than it looks.

    1 - does running the waterfall cause chlorine to break out as a gas and be lost more rapidly?
    Yes, outgasing of chlorine should occur at a higher rate with agitated water.

    2 - my TA is still 170; will running the waterfall more often cause the pH to stay high?
    Yes, it is very difficult to lower PH when TA is high.

    3 - The waterfall pump is "Centurion Switchless" 2 HP as far as I can tell. Is this an expensive motor to run?
    Yes. Probably uses over 2 kw.

    4 - Do you notice any significant evaporation losses with your waterfall? or do I have a leak in the rocks?
    I don't have a waterfall but it would make sense that evaporation is increased. Larger surface area created by the waterfall would increase evaporation.

    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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