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Thread: 1 Year Pool Owner, 1st Algae Problem

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    1 Year Pool Owner, 1st Algae Problem

    Hi all-

    So about 3 weeks ago, I noticed some algae on the floor in two separate areas of the pool in the cove.....right where the floor meets the wall. I scrubbed and vaccumed the whole pool, shocked the pool and cleaned the filter cartridge. The algae came back about two weeks later (5 days ago)........this time, almost the entire perimeter of the pool and also on the ladder. I scrubbed, vaccumed and shocked the pool again. Today, 5 days later, it's starting to come back. It's kind of a black/brown/green/yellow color. Last test 5 days ago showed CYA at 80, TA at 70, FC at 6, CC at .4 and pH at 7.2. Water temp is a steady 78 degrees.

    I have an algaecide, but am contemplating using it. Should I avoid the algaecide and continue with shocking and scrubbing? Any tips or thoughts?
    24' Round Above Ground w/ Vinyl Liner 14,996 Gallons
    Hayward Extreme Cartridge Filter w/1.5hp pump
    Hayward In-Line Chlorinator- Puck Fed
    Hayward Skimmer
    Taylor K2006 DPD-FAS Test Kit

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    Re: 1 Year Pool Owner, 1st Algae Problem

    With algae, you need to follow the SLAM process right to the end, rather than just do a one-time "shock" of your pool.

    How are you getting those test results?

    Your low TA and high CYA is due to use of pucks (your signature indicates a puck feeder).
    Additionally, your "shock" is probably dichlor or trichlor.

    Your FC is at the minimum for your CYA level. See the chlorine/CYA chart.

    We do not recommend the use of algaecide.

    I would advise you to read ABCs of pool water chemistry and recommended pool chemicals.

    Post back if you have any questions.

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    mrcarcrazy's Avatar
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    Re: 1 Year Pool Owner, 1st Algae Problem

    Quote Originally Posted by Abigail K View Post
    With algae, you need to follow the SLAM process right to the end, rather than just do a one-time "shock" of your pool.

    How are you getting those test results?

    Your low TA and high CYA is due to use of pucks (your signature indicates a puck feeder).
    Additionally, your "shock" is probably dichlor or trichlor.

    Your FC is at the minimum for your CYA level. See the chlorine/CYA chart.

    We do not recommend the use of algaecide.

    I would advise you to read ABCs of pool water chemistry and recommended pool chemicals.

    Post back if you have any questions.
    IG gunite/plaster pool/spa Started 1/17/14, Plastered 5/16/14
    Size: 12'-21'x39' free form, depth ranging from 4' to 7, attached 6 person spa with spillover.
    Equipment: Whisperflo 2hp pump, Pentair 30" sand filter, Pentair Mastertemp 400k BTU heater, 1hp Whisperflo for waterfalls, and a blower for spa floor

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    Re: 1 Year Pool Owner, 1st Algae Problem

    Thanks Abigail-

    I have a Taylor FAS-DPD kit and yes, my chlorinator is a puck feeder. I'll check out the "slam" process.
    24' Round Above Ground w/ Vinyl Liner 14,996 Gallons
    Hayward Extreme Cartridge Filter w/1.5hp pump
    Hayward In-Line Chlorinator- Puck Fed
    Hayward Skimmer
    Taylor K2006 DPD-FAS Test Kit

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    Re: 1 Year Pool Owner, 1st Algae Problem

    Quote Originally Posted by Abigail K View Post
    With algae, you need to follow the SLAM process right to the end, rather than just do a one-time "shock" of your pool.

    How are you getting those test results?

    Your low TA and high CYA is due to use of pucks (your signature indicates a puck feeder).
    Additionally, your "shock" is probably dichlor or trichlor.

    Your FC is at the minimum for your CYA level. See the chlorine/CYA chart.

    We do not recommend the use of algaecide.

    I would advise you to read ABCs of pool water chemistry and recommended pool chemicals.

    Post back if you have any questions.

    Thanks again- quick question-

    We are expecting rain tonight and tomorrow. Let nature take it's course and begin slamming after the rain? Or should I slam it right away?
    24' Round Above Ground w/ Vinyl Liner 14,996 Gallons
    Hayward Extreme Cartridge Filter w/1.5hp pump
    Hayward In-Line Chlorinator- Puck Fed
    Hayward Skimmer
    Taylor K2006 DPD-FAS Test Kit

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    pepsiholic's Avatar
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    Re: 1 Year Pool Owner, 1st Algae Problem

    Rain won't hurt a thing, unless you'll melt..lol... seriously, start right away the sooner you get it, the quicker the process will go. And you won't be losing all of your chlorine to the sun.
    24 x 52 Round AG Outback Empire Pool 13,500 gal.
    1 HP Hayward Power-Flo pump w/Hayward 18" 150lb. sand filter
    TF-100 test kit & SpeedStir
    Wanda the Whale Vacuum

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    Mod Squad jblizzle's Avatar
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    Re: 1 Year Pool Owner, 1st Algae Problem

    I will add this to your reading list: How to Chlorinate Your Pool

    You are going to have to stop using tablets ASAP.
    Jason, TFP Moderator
    18k IG pebblesheen pool, Hayward ProLogic P4 w/ T-15 SWG, Pentair 1HP 2-speed Superflo, Hayward 6020 DE filter
    500 sqft Heliocol solar panels, ThePoolCleaner, TF-100 test kit w/ SpeedStir
    Pool School + Test Kit + PoolMath = A TROUBLE FREE POOL
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    Re: 1 Year Pool Owner, 1st Algae Problem

    Quote Originally Posted by jblizzle View Post
    I will add this to your reading list: How to Chlorinate Your Pool

    You are going to have to stop using tablets ASAP.
    Ouch. So just add household bleach or liquid chlorine?
    24' Round Above Ground w/ Vinyl Liner 14,996 Gallons
    Hayward Extreme Cartridge Filter w/1.5hp pump
    Hayward In-Line Chlorinator- Puck Fed
    Hayward Skimmer
    Taylor K2006 DPD-FAS Test Kit

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    Re: 1 Year Pool Owner, 1st Algae Problem

    Yes.

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    Casey's Avatar
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    Re: 1 Year Pool Owner, 1st Algae Problem

    And do not ever let rain stop you from dosing your pool unless it is lightening out and too dangerous. A lot of people let the rain factor in to their pool maintenance and end up with a really big green monsterous mess. It's water. Don't be afraid of it.
    I'd bet you my bikini you'll never get TFP water from a pool store!

    24' Sharkline Venture De Filter

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    Re: 1 Year Pool Owner, 1st Algae Problem

    Quote Originally Posted by Casey View Post
    And do not ever let rain stop you from dosing your pool unless it is lightening out and too dangerous. A lot of people let the rain factor in to their pool maintenance and end up with a really big green monsterous mess. It's water. Don't be afraid of it.
    Thanks. No fear. I just want to do it right the first time.
    24' Round Above Ground w/ Vinyl Liner 14,996 Gallons
    Hayward Extreme Cartridge Filter w/1.5hp pump
    Hayward In-Line Chlorinator- Puck Fed
    Hayward Skimmer
    Taylor K2006 DPD-FAS Test Kit

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    Re: 1 Year Pool Owner, 1st Algae Problem

    So I'm slamming the pool....yay! Quick question- I'm using a Taylor FAS-DPD test kit. To check the FC and CC, I'm using the 10mL sample. Add two dippers of the DPD Powder, swirl and then I'm adding the titrating reagent drop wise......counting and swirling until it turns clear. I get it crystal clear but after sitting a few seconds, it begins to show a pink silhouette. Add another drop a few times and it gets crystal clear again but gradually (not instantly) turns back to pink after a few moments. Same thing when I am measuring for CC. I can get it perfectly clear and within a minute or so it starts to turn pink and gets progressively darker overtime.

    I've been using this kit for about 6 months now and have never really seen that before. Is this normal? Or maybe a characteristic of the CC in the water?

    Counting the last drop that induces the change in color (CYA was 70 when I began slamming),

    4PM:
    FC 28.5
    CC 1.0

    8:30PM:
    FC 23.5
    CC 2.0

    I just added enough bleach to bring the FC back to shock level and am going to recheck it at 9:30 and again early AM to check for any loss overnight.
    24' Round Above Ground w/ Vinyl Liner 14,996 Gallons
    Hayward Extreme Cartridge Filter w/1.5hp pump
    Hayward In-Line Chlorinator- Puck Fed
    Hayward Skimmer
    Taylor K2006 DPD-FAS Test Kit

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    Mod Squad jblizzle's Avatar
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    Re: 1 Year Pool Owner, 1st Algae Problem

    As soon as it goes clear, continue on with the CC test. The sample will turn pink again if you wait too long. Same as after the CC test.
    Jason, TFP Moderator
    18k IG pebblesheen pool, Hayward ProLogic P4 w/ T-15 SWG, Pentair 1HP 2-speed Superflo, Hayward 6020 DE filter
    500 sqft Heliocol solar panels, ThePoolCleaner, TF-100 test kit w/ SpeedStir
    Pool School + Test Kit + PoolMath = A TROUBLE FREE POOL
    If you found TFP helpful and we saved you money ... Become a TFP Supporter!

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    Re: 1 Year Pool Owner, 1st Algae Problem

    Quote Originally Posted by jblizzle View Post
    As soon as it goes clear, continue on with the CC test. The sample will turn pink again if you wait too long. Same as after the CC test.
    Thanks!
    24' Round Above Ground w/ Vinyl Liner 14,996 Gallons
    Hayward Extreme Cartridge Filter w/1.5hp pump
    Hayward In-Line Chlorinator- Puck Fed
    Hayward Skimmer
    Taylor K2006 DPD-FAS Test Kit

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    Re: 1 Year Pool Owner, 1st Algae Problem

    So the slamming process seems to be working. I measured a CC level as high as 1.5 yesterday and my last three CC level readings were all < .5. My bleach additions are going down overtime to keep the FC at shock level (which is 28 given my CYA of 70). But I lost 6ppm overnight between 10PM and 5:45AM with the chlorinator shut off, so I'm going to continue to SLAM until I see that loss get below 1ppm. That to me really seems to be the true test.

    Things I noticed:

    I pulled my cartridge today and it was green! At least it's doing it's job. I gave it a good rinse and threw it right back in the game.

    I scrubbed the pool yesterday and when scrubbing it again today, I noticed a few specs/smears that looked to be algae marks. I'm pretty sure that is something that resurfaced since yesterday. I've been taking my time (not doing a rush job) scrubbing the floor and walls really good....and paying close attention to the areas I was noticing the algae had been forming consistently......which is where these marks re-appeared.

    I pulled my ladder out yesterday and went to town today scrubbing it with bleach. The algae was primarily concentrated on the bottom two steps, the entire backside and the side of the ladder farthest from the return jet. The side closest to the jet was pretty much visibly algae free which makes sense in theory. I plan on putting it back in when the slamming process is complete.

    While I'm confident I'm headed in the right direction, I welcome any comments, tips or things to watch for.

    Thanks again for the help everyone. SLAMing away-
    Steve
    24' Round Above Ground w/ Vinyl Liner 14,996 Gallons
    Hayward Extreme Cartridge Filter w/1.5hp pump
    Hayward In-Line Chlorinator- Puck Fed
    Hayward Skimmer
    Taylor K2006 DPD-FAS Test Kit

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