Become a TFP Supporter Pool Math Forum Rules Pool School
Results 1 to 5 of 5

Thread: Water level low? Algae on my Lytro legend

  1. Back To Top    #1

    Join Date
    Apr 2017
    Location
    San Ramon, Ca
    Posts
    7

    Water level low? Algae on my Lytro legend



    I read somewhere that water level should be half of skimmer opening. Mine is about half way from the Lower tile. So I should add more water right?

    Does water evaporation reduce CYA levels?

    I pulled my pool sweeper out to clean the bag and there was some green algae on it? Should I be concerned?


    Any advice would be great

    Thanks
    ~26k Gallons, Plaster,in ground installed 2001, Purex/Triton Ultra Flo 6147 2HP Filter Pump, Pentair CCP 420 Filter, Compool LX220 Solar controller, 11 Panel Solar Industries Solar Panel, Lytro Legend Sweeper, Taylor K-2600 test kit.

  2. Back To Top    #2
    Richard320's Avatar
    Join Date
    Jan 2010
    Location
    San Dimas, CA (LA County)
    Posts
    20,311

    Re: Water level low? Algae on my Lytro legend

    Yes, no, yes.

    Algae on anything that was in the pool indicates insufficient chlorine.

    If your CYA is real high, your FC needs to be real high, too, often higher than the testblock can read and guaranteed higher than what the pool store recommends as they tend to ignore the FC/CYA relationship. Pool School - Chlorine / CYA Chart

    Ideally, you'll SLAM your pool to eliminate any algae spores. It might only take a day to pass the three tests if you caught it fast enough.
    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!

  3. Back To Top    #3

    In the Industry

    Donldson's Avatar
    Join Date
    Jun 2009
    Location
    NW Ohio
    Posts
    3,219

    Re: Water level low? Algae on my Lytro legend

    Quote Originally Posted by jRom View Post
    Does water evaporation reduce CYA levels?
    No. Technically evaporation raises CYA but since the water is refilled it effectively stays the same. The only ways to reduce CYA (aside of waiting for months or years for it to break down) is to pump out water and replace with fresh water or reverse osmosis.
    JD - 28' Round Above Ground Pool, 17,000 Gallons. Dual speed Jacuzzi pump with cartridge filter. Dual speed 1 HP pump, Hayward S210T sand filter
    Pool School - PoolMath

  4. Back To Top    #4

    Join Date
    Apr 2017
    Location
    San Ramon, Ca
    Posts
    7

    Re: Water level low? Algae on my Lytro legend

    Thanks RIchard and Donldson.

    So after reading Richard's advice I measured my FC Level, it was 8.0 at around 10:00 am. So I added 121 oz Clorox bleach 8.2% and turned my filter on to circulate the Chlorine. Measured about 3 hours later at around 1:00 pm and FC 11.2.

    At around 10 pm I remeasured everything

    FC 8.6 forgot to measure CC
    pH 7.8
    TA 80
    CH 250
    CYA 120 (did 50/50 tap water and pool water)

    So I lost about 2.6 ppm of Chlorine which is in line with the average from what I have read in the forums that between 2-3 ppm of Chlorine loss/day is normal.

    I added another 121 oz of Clorox at 10:45 pm, turned the pump on to cirulate the water.

    at 12:45 am Measured FC at 11.8.

    Will measure in the morning to see if I pass ONCLT and then I guess if it fails I will SLAM the pool. Thought I would try this first before Slamming as my CYA levels are so high I would need to maintain my FC at 39, that's alot of Chlorine...

    During the day and went and bought some HASA 12.5% Chlorine at a Pool Supply store $18.99 for 4 Gallons. I was using Clorox I bought from Costco but the way I'm going through it hate throwing away all the plastic gallon bottles away. I bought (2) boxes 3 bottle 121 oz for $9.99.

    During the week I was adding a bottle every 2 days to keep my FC levels up around 8. So already used 4 bottles, thinking if I use higher % Chlorine I wouldn't have to put so much in. But haven't really calculated the cost ratio of which is better. Clorox or Hasa. Need to re-read that post on how to calculate %chlorine/$.

    Thanks, will let you guys know if I pass ONCLT tomorrow.
    ~26k Gallons, Plaster,in ground installed 2001, Purex/Triton Ultra Flo 6147 2HP Filter Pump, Pentair CCP 420 Filter, Compool LX220 Solar controller, 11 Panel Solar Industries Solar Panel, Lytro Legend Sweeper, Taylor K-2600 test kit.

  5. Back To Top    #5

    Join Date
    Apr 2017
    Location
    San Ramon, Ca
    Posts
    7

    Re: Water level low? Algae on my Lytro legend

    So checked my FC the next morning and it was FC 11.0. So only loss 0.8 PPM of chlorine. So I passed the ONCLT?

    Pool looks great, water is clear.


    ~26k Gallons, Plaster,in ground installed 2001, Purex/Triton Ultra Flo 6147 2HP Filter Pump, Pentair CCP 420 Filter, Compool LX220 Solar controller, 11 Panel Solar Industries Solar Panel, Lytro Legend Sweeper, Taylor K-2600 test kit.

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •