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Thread: Liquid Solar Pool Cover

  1. #1
    Mod Squad Butterfly's Avatar
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    Liquid Solar Pool Cover

    Looking for opinions on any liquid solar pool cover. My PS sells http://www.Ecosavr.com .
    TFP Moderator TF100 Test Kit TF100 TestKit YouTube Channel PoolMath
    You're done SLAMing when:
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  2. #2
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    A waste of money, IMO.
    Buggs

    14,000 gallon, in ground, plaster, free form, play pool.
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    WaterCo Micron High Rate sand filter S750 490 lb, 4883 sq ft - using ZeoBest
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  3. #3
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    Quote Originally Posted by Buggsw
    A waste of money, IMO.

    ditto, i think the solar pills work better.

  4. #4
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    anything that chemically "coats" your water is pure **** and useless.

  5. #5
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    But it's one whole molecule thick, that means....... OH! Wait, I forgot, Thermodynamics !

    Ok, nevermind, it's **** !!
    TFP Moderator
    20K Gallon 20X36 Vinyl Inground
    Hayward S244T Sand Filter with 1HP Whisperflo Pump. Liquidator C-201 and Solar Heat

  6. #6
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    I disagree. IF you have little wind so that the surface of the water doesn't get chopped up, then coating the surface with a single molecule layer of a long-chained hydrocarbon alcohol, which is what these products are, will help reduce evaporation and therefore help prevent heat loss from evaporation (they do not "insulate" thermally -- they just reduce evaporation rates and evaporation is the leading cause of net heat loss, especially at night). They obviously don't work as well as a solar cover, but they do work -- again IF there is no wind.

    SolarPill works via the exact same concept as Ecosavr. The specific chemical might be different and may lead to different effectiveness, but the principle is the same for both.

    That said, I have not used either so cannot vouch for either. I'm just giving my 2 cents with regard to its theoretical usefulness and I've heard pool users in my local pool store say that the solar fish products (which are also similar) did help retain heat in their pools, but not by a lot and only on calm days.

    Richard
    16,000 gallon outdoor in-ground 16'x32' plaster pool; Pentair Intelliflo VF pump; Pentair IntelliTouch i9+3s control system; Jandy CL-340 square foot cartridge filter
    12 Fafco solar panels; Purex Triton PowerMax 250 natural gas heater (200,000 BTU/hr output); automatic electric pool safety cover; 4-wheel pressure-side "The Pool Cleaner"

  7. #7
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    I'm with ChemGeek...but I'm slightly biased on this as I always highly recommend using some sort of cover for your pool (we manufacturer heat pumps too).

    These chemical blankets are not good for heavy windy conditions (as ChemGeek said), but also if you have a vanishing edge or negative edge pool, constantly used waterfalls, or lots of fountains. The chemicals will tend to skim off the top and end up in the trough of a vanishing/negative edge pool, and windy conditions or aggitation will continue to break the surface tension of the chemicals, allowing the heat to escape.
    I've done presentations in which you can take a hot steaming cup of water, add a drop or two of the heatsaver and you can literally see the escaping steam close up.

    There are proper applications (flat water without alot of water features or wind), and there are applications in which it will not work.
    Sean Assam - Sean@teamhorner.com
    Commercial Products Sales Manager
    AquaCal Heat Pumps www.aquacal.com
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  8. #8
    Mod Squad Butterfly's Avatar
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    Thanks very much for your opinions.

    It does appear, based on Richard's & Sean's comments, that we actually DO HAVE a pool that fits the criteria of a good probability for this to work! Thank you both for taking the time to state your theories and list the necessary information for us to make a decision to at least try it!

    Next spring, we may be in the water early!
    TFP Moderator TF100 Test Kit TF100 TestKit YouTube Channel PoolMath
    You're done SLAMing when:
    1)You lose 1ppm or less FC overnight, & 2)You have .5ppm CC's or less, & 3)your water is clear.

    ~ One should not use a sledge hammer to swat a mosquito. ~

    If you found TFP helpful and we saved you money ... Become a TFP Supporter!

  9. #9
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    I tried it a few years ago and did not notice any noticable difference.

    I bought several with the "return back" money guarantee. I tried returning it (Leslie Pool Supply) and was never able to. They always found a reason NOT to give me my money back on the un-used fishies.

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    Re: Liquid Solar Pool Cover

    These have to be a waste of time and money. First, they will be skimmed off the top of the pool the first time the filter runs. Secondly, the main loss of heat is not from evaporation, but from radiation of heat from the pool water to the air. As haze said, it's THERMODYNAMICS. If this product really worked, then imagine how well a single pane glass window would work to keep heat in your house. Don't waste your money.
    Brian
    22,000 gallon in ground Gunite pool(Beauty Pool, 22 yrs old)) with built in hot tub,
    Hayward DE75 Filer and Pump, Haywood Heater, AutoMatic pool timer, BBB Method folower.

  11. #11
    Senior Member solarboy's Avatar
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    Re: Liquid Solar Pool Cover

    Quote Originally Posted by dadwright
    Secondly, the main loss of heat is not from evaporation, but from radiation of heat from the pool water to the air.
    I've always been told it's evaporation. I can see the steam rising off my pool in our cool still nights.
    Self built 5500 gallon bare concrete (temporarily) pool with limestone coping, Pentair Swimmey 1/2 HP pump, Triton sand filter with DE, Simpool peristaltic muriatic acid pump with pH sensor and Monarch SWG. Home made solar heater with Pentair Compool control panel and 3 way valve. 1 skimmer, 1 main drain, 2 returns, 2" plumbing, Hayward auto fill valve.

  12. #12
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    Re: Liquid Solar Pool Cover

    Defiantly evaporation. Without a cover, over 70% of heat loss is from evaporation.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
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  13. #13

    Re: Liquid Solar Pool Cover

    My biggest concern is what they are adding to the pool. Will it gum up the filter, put a line of film on my liner, is it safe for swimmers?

    Also.. does the filter just remove it right away?
    Indiana, ABG 24'x52" Galveston by Blue Cascade (Craigslist $600 w/part of deck included), 13,500 gallons, Intex SWG, solar panel

    My backyard is like a park... Why then does DH always want to go camping??? I just don't understand.

  14. #14
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    Re: Liquid Solar Pool Cover

    Quote Originally Posted by dadwright
    they will be skimmed off the top of the pool the first time the filter runs.
    If your pump is running so strong that it creates a vortex, then you would be right, but usually the water flow isn't that high so the product remains on the surface. Also, any product going through the filtration system will end up going right through any filter and back into the pool. The molecule is far too small to get caught in any filter. It might get caught by some types of clarifiers, though even that may not happen since the molecule is uncharged (though the alcohol end is polar).
    16,000 gallon outdoor in-ground 16'x32' plaster pool; Pentair Intelliflo VF pump; Pentair IntelliTouch i9+3s control system; Jandy CL-340 square foot cartridge filter
    12 Fafco solar panels; Purex Triton PowerMax 250 natural gas heater (200,000 BTU/hr output); automatic electric pool safety cover; 4-wheel pressure-side "The Pool Cleaner"

  15. #15
    Senior Member mas985's Avatar
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    Re: Liquid Solar Pool Cover

    This study also confirms that without a cover, evaporation is the largest component of heat loss. But you can also use some of the formulas presented in the paper to prove it to yourself.
    Mark
    Hydraulics 101; Pump Ed 101; Pump and Pool Spreadsheets; Pump Run Time Study
    18'x36' 20k gallon plaster/gunite pool, 1/2 HP 2sp pump, Aqualogic PS8 SWCG, 420 sq-ft Cartridge Filter, 450 sq-ft EPDM Solar Panel, 6 jet spa, 1 HP jet pump, 400k BTU NG Heater, ThePoolCleaner, DIY Acid Dosing

  16. #16
    Senior Member LisaM's Avatar
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    Re: Liquid Solar Pool Cover

    I have been using a similar product for the past week and have noticed some retention of heat at night. Not as good as a solar blanket but better than nothing. For the cost of it I say its worth a try.
    Cleveland, Ohio
    IG 36,000 gallons. Vinyl Liner, Hayward ProGrid 3620 DE Filter, Hayward Super Pump, Hayward Gas Heater

  17. #17
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    Re: Liquid Solar Pool Cover

    I know this is an old post but.....

    Has anyone tried using Isopropanol as a liquid cover? Looking at the safety datasheet heatsavr is 95% IPA.

    Gareth

  18. #18
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    Re: Liquid Solar Pool Cover

    First, I know a couple of people at the place that makes the fish you through in your pool or use via injection. Second, the stuff works if the pool is still. Disturb the water and it breaks apart and reforms when the pool is calmed. The old stuff used to gum up filters and sides. There seem to have been some improvements over the last few years where this was an issue.

    The liquid seems to stop evaporative heat losses when the surface is calm. For most residentials, this is at night when there is nobody using the pool and pump is off or if the pool is equipped with a variable speed pump, it is on its low speed setting, This is their target market.

    IMHO, this is a good thing for free forms where using a solar blanket is difficult.

    Scott
    Owner of - PoolGuyNJ LLC
    Expert Pool and Spa Repairs, Renovations, and Augmentation. Helping people decide what is the right gear for meeting their needs. Expectations Set, Expectations Met, No Surprises.

  19. #19
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    Re: Liquid Solar Pool Cover

    Quote Originally Posted by gbobbage
    Has anyone tried using Isopropanol as a liquid cover? Looking at the safety datasheet heatsavr is 95% IPA.
    Isopropanol is just a carrier and evaporates. The active ingredient that remains is typically a long-chain alcohol such as cetyl alcohol or stearyl alcohol as described in this post and this post.
    16,000 gallon outdoor in-ground 16'x32' plaster pool; Pentair Intelliflo VF pump; Pentair IntelliTouch i9+3s control system; Jandy CL-340 square foot cartridge filter
    12 Fafco solar panels; Purex Triton PowerMax 250 natural gas heater (200,000 BTU/hr output); automatic electric pool safety cover; 4-wheel pressure-side "The Pool Cleaner"

  20. #20

    Re: Liquid Solar Pool Cover

    I tend to be VERY skeptical and would not have bought Cover Free. I went to a new Leslie's that just opened and since I bought a 3 Liter bottle of both Pool First Aid and Pool Perfect, I got a free Quart of Cover Free with purchase (Grand Opening Special plus 20% off).

    I can't explain how these things work but I can say that Cover Free from Natural Chemistry works. I have always been impressed with their products and it looks like Cover Free works as well. I added it to the pool and had a 5 degree increase in temperature in just two days with it going into the 50s at night. I guess by not letting the night air steal so much heat it is actually able to allow the pool to heat up quicker due to retention.

    As to it staying on the surface, it uses surface tension to stay on top of the water surface. It is not all pulled into the skimmer and pump unless you have many time more pump then you need and have a flushing vortex in your skimmer box. And since the dose is measured by your pools total gallons not surface area, what does get pulled in resurfaces when it re-enters the pool from the filter. Also the time its most needed is at night, so the first time you use it, use it at night, turn your pump off and then add the product to the surface. It is suggested to retreat once a week, which I do every Thursday Night.

    We have been swimming for three weeks now and I have never been swimming this early without using the heater, dome, and a full solar blanket!
    Pool #1 IG 24k Diamond Brite plaster with spill-over spa. Jandy Aqua Link RS One Touch with built into pool floor cleaner. Jacuzzi Magnum pump/basket feeding Hayward top mount Zeosand filter. Jacuzzi Magnum pump/basket for Spa Jets. Heat Siphon pool heat pump. Dolphin Robotic pool cleaner.

    Pool #2 IG 35K 20X40 Vinyl. Hayward top mount Zeosand filter with Pentair 3 HP IntelliFlo VS+SVRS. Chemical Free pool using Water Doctor Copper Ion Generator, PoolSkim, Polaris 9300 Sport robotic pool cleaner, Heat Siphon pool heat pump, solar blanket, Ameri-Dome 50X30 dome enclosure during Winter.

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