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Thread: Determine Size From Specs?

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    Determine Size From Specs?

    Hi, I am a new homeowner, this is my first pool season. It is very overwhelming!! I'm glad I found this forum and I hope it will clarify everything. Since I discovered this site last night I've learned a tremendous amount of info. We opened our pool 5 days ago, (we called a pool service) it didn't look too bad. Now, however, it is a swampy green. So I'll be starting on the shocking cycle. However, I do not know the pool gallon size. I've attached the specs the previous homeowner left us when the vinyl was replaced.
    Also, do I measure the pH balance now too?
    Thanks for your help
    Attached Images Attached Images
    1) 22,000 gallons
    2) DE filter
    3) IG
    4) vinyl
    5) Hayward pro-grid 2420, 1 hp, 96 gpm

    Also have Dolphin diagnostic 2001

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    JasonLion's Avatar
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    Re: Determine Size From Specs?

    Welcome to TFP!

    I get around 22,000 gallons, plus or minus.

    If there is already water in the pool, you should get a complete set of water test results (FC, CC, PH, TA, CH, CYA) and post them.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
    Creator of PoolMath and Pool Calculator. Other handy links: Support this site, TF Test Kits, Pool School

  3. Back To Top    #3

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    Re: Determine Size From Specs?

    I just ordered the tf-100 test kit. I can't wait, I am totally lost. In fact, my husband was taking care of the backwashing and he's away for two days so I've been taking over. I was so totally clueless that I put in salt (for ice removal) instead of the DE powder. I hope I didn't kill the system.
    So you can see I really know nothing.
    Question: Is CYA taken into consideration in the shocking phase? It wasn't part of the shocking cycle mentioned in the pool school forum. I do know that the pool service used 3 tablets. Is it pointless to chlorine shock for the next two days until the test kits arrive and I know my CYA level or any levels for that matter.
    The previous homeowners left a few strips and I tested this morning. 0 for chlorine, 6.8 or 7.2 pH (not familiar with the color shading yet) and alk 40.
    chlorine 0 is disturbing since as I said we have pellets in the system.

    Thanks so much,
    1) 22,000 gallons
    2) DE filter
    3) IG
    4) vinyl
    5) Hayward pro-grid 2420, 1 hp, 96 gpm

    Also have Dolphin diagnostic 2001

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    Mod Squad Bama Rambler's Avatar
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    Re: Determine Size From Specs?

    You said the pool was green, so here's what I'd do while waiting on the test kit to arrive. Go buy as much bleach as you can. and then go buy some more. If the kit will be there in a couple of days just wait on it before you do anything else. If it's going to be longer, take a sample to the pool store and have them test the water. It's not good but it's better than nothing. Don't buy anything that they recommend. Once you have test results, post them here and we'll go from there.
    Dave J. TFP Moderator
    24' x 52" Round AGP. 2hp/¼hp SPL Power-Flo 2-speed pump. 200sqft Waterway Cartridge Filter. 45MHP2(3GPD) Stenner Peristaltic Pump
    Pool School ----- Pool Math ----- TF-Test Kit

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    Re: Determine Size From Specs?

    can you specify how much bleach to buy? I'm sending someone else to wal mart to buy it for me (I'm home with 3 kids) and I don't want to burden him with too much. I'll be able to go on Wednesday. According to the pool calculator I need 7 gallons of 6% bleach. How many times a day do I need to apply this?

    Thanks so much for your speedy replies.
    1) 22,000 gallons
    2) DE filter
    3) IG
    4) vinyl
    5) Hayward pro-grid 2420, 1 hp, 96 gpm

    Also have Dolphin diagnostic 2001

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    Mod Squad Bama Rambler's Avatar
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    Re: Determine Size From Specs?

    I would start with 20 large jugs. Yeah that sounds like a lot, but remember when shocking a green pool, if the people aren't looking at you funny when you leave the store, you didn't buy enough.

    There's no telling how often or how much you need to add. Only testing will tell you that, and that's what the kit is for. You'll have to know your CYA before you can know what your shock level is.
    Dave J. TFP Moderator
    24' x 52" Round AGP. 2hp/¼hp SPL Power-Flo 2-speed pump. 200sqft Waterway Cartridge Filter. 45MHP2(3GPD) Stenner Peristaltic Pump
    Pool School ----- Pool Math ----- TF-Test Kit

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    Re: Determine Size From Specs?

    I've decided to start bleaching already, I'm expecting company on Sunday and would love to have the pool ready. Is there any hope? At 5:30 I put in 4 (1.35 gallons clorox) Is there a concept of overchlorinating. I would like to put some more in tonight too. I will try to attach some pics.
    1) 22,000 gallons
    2) DE filter
    3) IG
    4) vinyl
    5) Hayward pro-grid 2420, 1 hp, 96 gpm

    Also have Dolphin diagnostic 2001

  8. Back To Top    #8

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    Re: Determine Size From Specs?

    here is the pic
    Attached Images Attached Images
    1) 22,000 gallons
    2) DE filter
    3) IG
    4) vinyl
    5) Hayward pro-grid 2420, 1 hp, 96 gpm

    Also have Dolphin diagnostic 2001

  9. Back To Top    #9
    Mod Squad jblizzle's Avatar
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    Re: Determine Size From Specs?

    It is impossible to recommend an amount of bleach not know what your CYA (stabilizer level) is. Based on the CYA level, you can get the FC shock level required to kill all the algae. Knowing your pool size and current FC level and the required shock FC level, you can calculate the amount of bleach (FC) to add.

    Adding some bleach now can help, but not knowing the target level means you may undershoot and not kill much or overshoot and potentially bleach your liner.

    When you start the shock process, you just measure your current FC level (every hour or so to start with) and use the poolcalculator.com to determine how much bleach to add to reach recommended shock level. The idea is to hold the FC at the shock level to kill everything off quickly. The better you hold it at shock level ... the faster the pool will clear.

    ETA: strip tests seem to be worthless from what I read on the forums ... a test of the water at a pool store could give a clue as to the levels while you wait (but if your CYA is a little high ... your required FC could easily be >10 and the pool store may only test up to 5 or 10).

    ETA2: your 4 bottles of bleach will raise your FC by about 15ppm in a 22,000 gallon pool
    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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  10. Back To Top    #10

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    Re: Determine Size From Specs?

    is it crucial to know the cya level? is it present in a pool without having to add it? we most certainly did not add it on its own, unless it was in the packet that the pool service used to shock the pool.
    if i go to a pool service, how much does it cost for them to test (approx)? should i buy a cya stabilizer from them? this forum seems to recommend staying far away from them

    Thanks,
    1) 22,000 gallons
    2) DE filter
    3) IG
    4) vinyl
    5) Hayward pro-grid 2420, 1 hp, 96 gpm

    Also have Dolphin diagnostic 2001

  11. Back To Top    #11
    Mod Squad jblizzle's Avatar
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    Re: Determine Size From Specs?

    You said the pool company used tablets ... the tablets have CYA in them. Also if they used "packets" that could have either added more CYA or calcium depending on what they actually used.

    Pool stores generally will test the water for free. Just don't fall for their sales pitch. You can buy products at these stores, but it may not be the cheapest place and ONLY buy stabilizer/conditioner and liquid chlorine and maybe muriatic acid. Just say no to algaecides and phosphate fighters etc. Generally the liquid chlorine is just a higher concentration (10% or 12%) than bleach (6%) and many employees do not understand this.

    If you want a good laugh, mention you were thinking of using bleach and see what they say.

    Edit to emphasize: knowing the CYA level may be the most important number to know since it defines the required FC level. Getting a number from the pool store may allow you to start shocking while waiting for your kit since at least you know about where you stand ... although nothing is better than testing for yourself.
    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!

  12. Back To Top    #12

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    Re: Determine Size From Specs?

    So, I just got back from the pool store. Here are the test results
    TC 0
    FC 0
    pH 6.4
    TA 40
    CH 100
    CYA 0
    Copper .3
    Shock Ttmt 0

    Interesting, since I had a pool service open our pool and shock it.

    I was also told I must first treat the metal.

    I didn't buy anything, please tell what to do first, what to buy and quantity?
    Also is it ok to use the shock chlorine packets instead of lugging jugs of bleach.

    Thanks
    1) 22,000 gallons
    2) DE filter
    3) IG
    4) vinyl
    5) Hayward pro-grid 2420, 1 hp, 96 gpm

    Also have Dolphin diagnostic 2001

  13. Back To Top    #13
    Mod Squad Bama Rambler's Avatar
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    Re: Determine Size From Specs?

    You can use the bags of shock. What are the ingredients?

    The first thing you need to do is get the TA up to about 80 and then test the pH again. You can use Baking soda to do that.
    Dave J. TFP Moderator
    24' x 52" Round AGP. 2hp/¼hp SPL Power-Flo 2-speed pump. 200sqft Waterway Cartridge Filter. 45MHP2(3GPD) Stenner Peristaltic Pump
    Pool School ----- Pool Math ----- TF-Test Kit

  14. Back To Top    #14

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    Re: Determine Size From Specs?

    do i need to treat the metal first? what should i use? do i continue to backwash every 4 hours?
    1) 22,000 gallons
    2) DE filter
    3) IG
    4) vinyl
    5) Hayward pro-grid 2420, 1 hp, 96 gpm

    Also have Dolphin diagnostic 2001

  15. Back To Top    #15
    Mod Squad Bama Rambler's Avatar
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    Re: Determine Size From Specs?

    Don't worry about the metals right now. Get the TA and then the pH up. Then worry about the rest.
    Why are you backwashing every 4 hours? Is the pressure rising that fast?
    Dave J. TFP Moderator
    24' x 52" Round AGP. 2hp/¼hp SPL Power-Flo 2-speed pump. 200sqft Waterway Cartridge Filter. 45MHP2(3GPD) Stenner Peristaltic Pump
    Pool School ----- Pool Math ----- TF-Test Kit

  16. Back To Top    #16

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    Re: Determine Size From Specs?

    the pool service recommended that we do that in the beginning. it's usually up to 12 from 8 or 10. It's always dirty. I then place 2 cups of DE in the skimmer. should i not be doing that.

    so i need to go buy borax or soda ash and lots of baking soda.

    now, should i use pool water to dissolve, apparently the water where I live has copper in it.

    shock bags, all i remember is that it had 68% calcium hypochloride.


    how long after i add baking soda and borax should I test. Is there anything else i should be doing today/tonight?

    thanks so much for helping me
    1) 22,000 gallons
    2) DE filter
    3) IG
    4) vinyl
    5) Hayward pro-grid 2420, 1 hp, 96 gpm

    Also have Dolphin diagnostic 2001

  17. Back To Top    #17
    Mod Squad Bama Rambler's Avatar
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    Re: Determine Size From Specs?

    Add the baking soda first and give it about 30 mins and then test again.
    Dave J. TFP Moderator
    24' x 52" Round AGP. 2hp/¼hp SPL Power-Flo 2-speed pump. 200sqft Waterway Cartridge Filter. 45MHP2(3GPD) Stenner Peristaltic Pump
    Pool School ----- Pool Math ----- TF-Test Kit

  18. Back To Top    #18

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    Re: Determine Size From Specs?

    WOW!! I'm thrilled. I ended up putting in about 16 lb baking soda last night. This mornings reading for TA was fine. Check out this pic. We can see the bottom of the pool in the deep end too.
    My test kit has not yet arrived. What's the next step? I'm not clear about the pH levels, the color is borderline 6.8, 7.2.
    Thanks so much.

    should i send the dolphin in the deep end to clean up
    Attached Images Attached Images
    1) 22,000 gallons
    2) DE filter
    3) IG
    4) vinyl
    5) Hayward pro-grid 2420, 1 hp, 96 gpm

    Also have Dolphin diagnostic 2001

  19. Back To Top    #19
    JasonLion's Avatar
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    Re: Determine Size From Specs?

    Getting a new test kit is a good time to get a complete set of water test results.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
    Creator of PoolMath and Pool Calculator. Other handy links: Support this site, TF Test Kits, Pool School

  20. Back To Top    #20
    Mod Squad Bama Rambler's Avatar
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    Re: Determine Size From Specs?

    Exactly what number is fine?

    If you have a box of 20 mule team around you should raise your pH up to about 7.5. Then it's time to start shocking.
    What does the tracking say about when your kit will be there?
    What's your FC today?
    Dave J. TFP Moderator
    24' x 52" Round AGP. 2hp/¼hp SPL Power-Flo 2-speed pump. 200sqft Waterway Cartridge Filter. 45MHP2(3GPD) Stenner Peristaltic Pump
    Pool School ----- Pool Math ----- TF-Test Kit

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