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Thread: Chlorine feeder

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    Chlorine feeder

    For those of you that use chlorine feeders what are your opinions on the Pentair Rainbow 320 in-line feeder as compared to other models. Are there much difference between the different kinds of pucks if so which kind is the best.
    30' round AG pool 21,200 Gallons, 52" high, 1 1/2 HP Pump;
    25" 300lb. Cooper Ranger sand filter .

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    Join Date
    Feb 2008
    Location
    Denton, TX
    Posts
    5,061

    Re: Chlorine feeder

    There is a difference in tablets. For what it's worth, the Arch/HTH/Pace tablets contain copper and are worth avoiding for this reason. If you must use tablets, I would pay attention to the ingredients on the label and make sure that the ones you choose don't have metals which can cause staining. I think the Leslie's tablets are metal free. Downside is that they cost more.

    As far as the tablet feeder, I had a Rainbow 320 and took it off after it started leaking. I haven't missed it really.

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    Richard320's Avatar
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    Jan 2010
    Location
    San Dimas, CA (LA County)
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    Re: Chlorine feeder

    Quote Originally Posted by mike3554
    For those of you that use chlorine feeders what are your opinions on the Pentair Rainbow 320 in-line feeder as compared to other models. Are there much difference between the different kinds of pucks if so which kind is the best.
    Have you looked at the liquidator? You just dump your liquid chlorine in the tank and let it do the rest.

    Pucks are good if you're out of town, but otherwise they'll end up overloading your pool with Calcium or CYA. Previous homeowner used nothing but pucks, leaving me with CYA over 200 and CH approaching 4 figures. And the easy solution - draining - isn't feasible under water restrictions.
    16K freeform gunite with spa; Pentair 4000 DE filter; Century Whisperflow 1 HP; Pentair Minimax heater.
    Troublefree does not mean Maintenancefree. It's like brushing your teeth: You can spend a couple minutes a day and pennies a week or go to the dentist once a year and spend several thousand dollars.
    A pool is like a pet - you have to feed it every day, even the days you don't want to play with it!

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    Re: Chlorine feeder

    Where i live water is not very expensive and i would rather have the ease of the chlorine feeder and if i have to drain part of my pool once in a while to lower CYA that is ok. Was just looking for on info on which ones are the best/reliable and which pucks are the best to use.
    30' round AG pool 21,200 Gallons, 52" high, 1 1/2 HP Pump;
    25" 300lb. Cooper Ranger sand filter .

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    Join Date
    Jun 2007
    Location
    New Jersey
    Posts
    653

    Re: Chlorine feeder

    A Rainbow 320 came with my pool, but it's been somewhere in the basement for years. It never put sufficient FC in the pool unless I doubled my run time or ran 24/7. A tethered floater works perfectly for me. Just tie it to a brick and move it around to see where it puts out the right amount of FC. (I only use pucks a few weeks a year, either to raise CYA or when I travel.)
    Current: 28,000G 18'x36' I/G AnthonySylvan Plaster; Waterway 60 sq.ft. DE Filter; 1.0hp x 1.65 SF Two-Speed (B2982) WhisperFlo; 2004-Present
    Previous: 40,000G 20'x40' I/G Koven unlined WWII salvage 5/8" marine steel; Lomart Stainless Sand Filter; 3/4hp Hayward SuperPump; 1946-2003 (managed by me from about 1964)
    Ancient Taylor K-2000, upgraded with Taylor CH, TA, and FAS-DPD, and TFT CYA tests.

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    Re: Chlorine feeder

    Quote Originally Posted by mike3554
    Where i live water is not very expensive and i would rather have the ease of the chlorine feeder and if i have to drain part of my pool once in a while to lower CYA that is ok. Was just looking for on info on which ones are the best/reliable and which pucks are the best to use.
    That can work, as long as you are monitoring the CYA build up and keeping chlorine levels high enough to actually work.

    You can use the Pool Calculator, Effects of Adding Chemicals, at the bottom to calculate how long it will take your typical weekly usage of pucks to raise CYA enough to require testing to adjust the FC target you are using.

    In my pool, 7 pucks a week, 49 oz for 2 weeks, raises CYA by 20ppm which is enough to change my safe FC range from 2-4 to 4 - 6 as CYA goes from 30 to 50. So what was my target is now my minimum, in only 2 weeks. That is a pretty quick change in chlorine levels, but then my pool probably has more heat and more sun and more leaves than yours. Or maybe not, I dunno.

    [edit] I need to add, I use bleach mostly, cal-hypo sometimes. I did use pucks this year but for only a few weeks in the spring when I found, after not testing CYA for most of the winter, CYA was low. I also use them, plus bleach, while on vacation.
    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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    Guest

    Re: Chlorine feeder

    Quote Originally Posted by mike3554
    Where i live water is not very expensive and i would rather have the ease of the chlorine feeder and if i have to drain part of my pool once in a while to lower CYA that is ok. Was just looking for on info on which ones are the best/reliable and which pucks are the best to use.
    Must be nice to have so much water, you can just dump it...

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    Guest

    Re: Chlorine feeder

    Quote Originally Posted by mike3554
    For those of you that use chlorine feeders what are your opinions on the Pentair Rainbow 320 in-line feeder as compared to other models. Are there much difference between the different kinds of pucks if so which kind is the best.
    They are all pretty much the same, Mike. I have a unit on my pool (don't remember the manufacturer) that is turned off, and I will never use it again. You can have it for the price of shipping, if you want it. Just let me know and I'll take it off!

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