Pool Suddenly Cloudy in the Deep End

wjaneala

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LifeTime Supporter
May 17, 2015
169
Cullman, AL
Our pool has been crystal clear for about three weeks, since we opened it. Yesterday, the deep end suddenly became cloudy. I called my "pool guy," and took him a water sample. He said that I had phosphates in the water. Sold me a $26 bottle of stuff. I added said stuff. Nothing happened. Now he is saying I may need to shock it, but he already told me that my chlorine is a little high. I know I need to get some specific numbers for you all to give your advice, and I am going to do that today, but in the meantime, any ideas?
 
Yeah ... fire the pool guy and invest in one of the Recommended Test Kits.

Worrying about phosphates and talking about "shocking" but the chlorine is too high ... the guy has no idea what he is talking about. :hammer:

You need to know your CYA level and then follow the ShockLevelAndMAINTAIN Process

Seems I should get into the pool service business ... do an OK job keeping the pool clear, then if it goes bad, charge more to fix my screw up. Sounds like a great business plan :suspect:
 
That useless $26 bottle of stuff would pay for half of a Taylor K-2006 test kit online.

The permanent solution is what Jason just said. Fire the guy and get your own test kit.

But that will take a few days and you want to deal with this ASAP, I'm sure. Did soon-to-be-underemployed pool guy give you any readings so we can try to guess how much bleach you should add or if it would even help?
 
OK, just got back from getting my water tested:

Saturation Index: -1.4
CYA: 60
Total Chlorine: 1.3
Free Chlorine: 1.3
pH: 6.7
Total Alkalinity: 46
Adjusted Total Alkalinity: 28
Total Hardness: 204

I was told to:

1. Add 50lbs of baking soda (16lbs, wait 2 hours; 16lbs, wait 2 hours; 18lbs, wait 2 hours.
2. Add 2lbs of Balance Pak 200, for pH
3. Add 7oz. of Natural Clarifier every three days until the pool is clear

Also, the water around my steps is now taking on a green hue. :(
 
The chlorine is way too low.

PH definitely too low to swim in

Hardness should be fine

CYA could be a bit lower but likely fine as is.

There is no way to tell if these numbers are actually correct without a proper test kit, but if it were me,
I'd order a test kit right now, then make a trip to the store immediately and buy many many gallons of bleach to get the chlorine up
before it gets worse.
 
I don't really trust those results, but they're something. You need to halt that green before the whole pool turns to sludge. You have a BIG pool, so it's going to take a lot of anything to shift numbers.

My advice: 4 jugs of chlorox 8.25% bleach into the return stream with the pump on. As soon as that is done, order a proper test kit. You're working blind without it. All that bleach will only raise FC to maybe 10, which is scarcely above routine daily target for 60 CYA and far below shock level. And tomorrow probably the same again. About the best you can even hope for is that it won't get worse than it is. Beyond two days, without a test kit it's a waste of chemicals, so you might as well just fill it in.
 
OK, thanks. So no baking soda is needed? What about the pH and alkalinity?
We don't trust any of the test results, really.

I'm just trying to stop the green from taking over your pool. Emergency first aid. Forget pH and all the rest for the moment.
You're thinking of cosmetic surgery while we're trying to prevent you from bleeding to death.
 
I just plugged my numbers into the PoolMath calculator, and it's telling me to add 144oz. of bleach (at 8.25%). That would only be like a bottle and a half. Am I doing the calculations wrong? sorry, I am a total novice. Never owned a pool before! :)
 

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I just plugged my numbers into the PoolMath calculator, and it's telling me to add 144oz. of bleach (at 8.25%). That would only be like a bottle and a half. Am I doing the calculations wrong? sorry, I am a total novice. Never owned a pool before! :)
I'm estimating about 32000 gallons for a rectangular pool 20' * 40' * 5.5 average depth. What are you using for your volume? And what did you set the FC target?
 
OK. I'm adding the bleach. Will order the test kit tomorrow first thing.
So, for future reference, how do I avoid this situation again? As in, what should I be doing EVERY DAY to maintain my pool? And please don't be afraid to talk to me like a 2nd grader. I am completely new to this. THANK YOU!!!!
 
OK. I'm adding the bleach. Will order the test kit tomorrow first thing.
So, for future reference, how do I avoid this situation again? As in, what should I be doing EVERY DAY to maintain my pool? And please don't be afraid to talk to me like a 2nd grader. I am completely new to this. THANK YOU!!!!
Once you get the test kit and take control, by the time the pool is sparkling, you'll know what to do. It's really not much harder than keep pH in line and maintain adequate chlorine. Many of us have gone years without seeing green.

But here's the breakdown Pool School - Basic Pool Care Schedule
You'd do well to study the ABCs and Recommended Chemicals and Poolmath and How to Chlorinate articles. too.

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Does the pool have a "main drain'? ie;a fitting at the deep end from where the filtration system can draw water to filter? If so, is the valve open? Is the pump strainer clean? Filter clean? While I agree with other's observations re; water chemistry, circulation is mighty important too. I assume you run your pump 24/7? You need to.
Watch out for trying to do too much adjustment at once. the pH is off-the-charts too low - baking soda will bring that up - and it will take quite a bit. The total alk numbers don't make sense, a new pool with a fresh fill sure shouldn't have a total alk as low as 46, and what is "adjusted total alk"? Did someone adjust it even lower? Ouch. Soda ash (sodium carbonate) is used to bring that up, in a liner pool it should be at least 80, I usually like to see around 120 or so. You'll need a lot of that as well. I'd make it a priority to concentrate on getting the pH and total alk up where it should be - liner pool should be close to 7.4 (the pH of your eyes). Low pH wrinkles liners and takes the life out of them quicker than necessary. The trouble with this is, it will take more than a few days to stabilize the pH and especially the total alk adjustments, and like ohers have said, you don't have much time before the water turns. So - I'd also add at least a quart of some good quality ($26/qt.) algaecide - the killer, not the preventer - and hit it with a couple of cases (8 gallons) of liquid shock. Remember - liquid chlorine shock is heavier than water, add the majority of it close to the break near the shallow end so it doesn't hang out in the deep end and bleach the liner. I know, a lot of stuff to dump in, and the water's going to be out of whack for a few days or better, but this water is pretty out of shape!

Be sure the pump and filter are working as they're supposed to! Good luck.
 

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