Pool has been milky, cloudy, and green for 18+ months, even after draining and starting over..

jacquimae

New member
Aug 28, 2022
4
tulsa, oklahoma
Pool Size
20000
Surface
Plaster
Chlorine
Liquid Chlorine
Where to even begin! Well how about September of 2022. In 2022, we began working with a new Pool Company.

End of September, Pool CO replaced our filter sand & laterals. Less than two weeks later, Pool CO came back out because sand was blowing out of our return lines. I do not remember what the resolution was at the time, but we ended up closing the pool for the season.

When Pool Co opened the pool spring of 2023, we had cloudy water constantly.. so cloudy I couldn’t even tell half the time if there was sand blowing out or not. In June, Pool Co replaced the multiport valve. This did not solve the water cloudy issue. They kept insisting water chemistry was perfectly balanced and even ordered specialized test kits to see what could be causing this.

Of course I'm all over this forum as well as the rest of the internet and calling my local pool supply store. Everyone and their uncle says "broken laterals." Pool Co. insisted there's no way that was the problem.... By August of 2023, (water is milky now) Yardvarks was telling me the issue was that my old single-speed pump was failing (we'd already replaced some parts on it earlier in the summer). So we replaced the pump with a variable speed 1.5HP.

After this, we could get pool water to a cloudy blue, sometimes even enough to see the bottom of the pool. But there was still continually sand at the bottom of the shallow end right below the return lines.

September 2023 rolls around and Pool Co continues to insist that it is NOT sand blowing out of the returns; they thought it was dead algae and sediment… They also noted that the CYA level was so high they had to pump at least half the water out of the pool (we have to pump it out because our main drain was sealed off long before I bought the house).

Spring of 2024, Pool Co quoted me $1200 to drain and power wash the pool, which I thought was absurd. I rented the equipment myself and hired my cousin for half the cost. He had no idea about the sand issues, but called me halfway through and said there was tons of sand at the bottom of the pool and all over the deck…

This year, we are still in the same boat. The water is constantly green. After the pool CO comes out for weekly maintenance, they shock it, and we get the pool to a milky color.

2 weeks ago, the maintenance tech called and said… "Guess what. Sand is blowing out of the laterals." NO Darn SHERLOCK. After some back and forth, Pool Co agrees to replace the laterals at no cost to me (they attempted to invoice me $950, saying the work was out of warranty).

We are still having the same issue now. LAST week, Pool Co calls and says, "yes, the laterals WERE broken, so we replaced them… but now we've realized the float valve that sits under the multiport was installed upside down." (Remember, Pool Co. installed multiport valve last summer - not sure, but something tells me this is likely their error).

This week, Pool Co says last summer they only replaced the top half of the multiport valve. Now I need to replace the bottom portion, but they say I might as well replace the whole thing. Pool Co says multiport valve is now out of warranty (go figure...) and they’ll discount labor by 50%, but I have to buy a new multiport valve. The reason they are recommending to replace the multiport valve is because when they vacuum up the sand at the bottom of the pool, it immediately shoots out of the return lines so fast, there’s no way it’s going through the filter. So they think the bottom of the valve is what’s broken now.

I’m way overdue for a second opinion. I have one person coming out Saturday to take a look.
It's one thing if this is my own house, but I have tenants moving out in July and there's just no way I can rent it out to new tenants with the pool in this condition.

Any suggestions!?

Pool Notes - 75 year old in-ground gunite pool, 20,000 gallons. Main Drain is sealed off. Since purchasing the home in 2016, I've resurfaced the pool, installed a new deck, replaced the copper skimmer and return lines, added an auto-fill, replaced the pump, replaced the multiport valve, replaced the sand, replaced laterals twice.. I'm sure there's more!
 
When we started getting sand in our pool, we discovered that the tube that returns the filtered water back into the pool on the inside of our sand filter had separated from the housing that filters the sand from the clean water. There fore the water that was returning into the pool was not filtered at all. That would explain your green water - no filtration.
 
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When we started getting sand in our pool, we discovered that the tube that returns the filtered water back into the pool on the inside of our sand filter had separated from the housing that filters the sand from the clean water. There fore the water that was returning into the pool was not filtered at all. That would explain your green water - no filtration.
Ugh. I would hope that the pool tech would have discovered this when they emptied the filter to replace the broken laterals last week...
You can never assume that, though. I will ask the Pool Company if they think this could be an issue with my system.
 
Your green/milky/cloudy water is not due to the filter not work properly. All of the stated "colors" is due to algae. When they add the "shock" to the water it kills some of the algae but not all of it so it starts all over again :(

Here at TFP we teach YOU how to take care of YOUR pool. The main tool to do this is having a good test kit. Time and time again we have seen this kind of thing happen. We call it being "pool stored" but in your case it is "pool companied" :(

Now the filter not working properly is not a good thing and does need to be fixed. We can help you do this also.

How far do you live from the pool? Do you think the people in the house now could handle doing simple tests on the water?

This will get us started on fixing the pool and making it TFP clear!

Kim :kim:
 
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Sand Filter is a Hayward S244T and the multiport valve is a Hayward brand top mount multiport valve.
Assuming you have a Hayward Variflo mpv which is a big assumption due to lack of provided detail, sand blowing back into the pool could be a broken diverter or a bad diverter seal. Variflo’s have a factory installed gasket on the diverter so there’s no changing a spider gasket on those valves. The diverter can be replaced as an individual part if broken or if the seal is damaged. Why that wouldn’t have been noticed or inspected when they “changed the top half” I don’t know. Not enough detail has been provided to make a valid diagnosis.

I believe your water issues are twofold - poor chemistry and water bypassing the media and returning to the pool as evidenced by sand everywhere. Swapping the mpv isn’t out of the question to correct the filtration issue assuming the rest of the filter is up to scratch. However there is a lot of detail that isn’t provided that is necessary to provide a valid diagnosis. Your laterals or standpipe could still be in question. Again without getting hands on it’s very hard to definitively tell. Repairing the filter/mpv still won’t fix bad chemistry which is likely contributing to the cloudiness, but would fix filtration issues which also impacts the turbidity and the sand problem.
 
Assuming you have a Hayward Variflo mpv which is a big assumption due to lack of provided detail, sand blowing back into the pool could be a broken diverter or a bad diverter seal. Variflo’s have a factory installed gasket on the diverter so there’s no changing a spider gasket on those valves. The diverter can be replaced as an individual part if broken or if the seal is damaged. Why that wouldn’t have been noticed or inspected when they “changed the top half” I don’t know. Not enough detail has been provided to make a valid diagnosis.

I believe your water issues are twofold - poor chemistry and water bypassing the media and returning to the pool as evidenced by sand everywhere. Swapping the mpv isn’t out of the question to correct the filtration issue assuming the rest of the filter is up to scratch. However there is a lot of detail that isn’t provided that is necessary to provide a valid diagnosis. Your laterals or standpipe could still be in question. Again without getting hands on it’s very hard to definitively tell. Repairing the filter/mpv still won’t fix bad chemistry which is likely contributing to the cloudiness, but would fix filtration issues which also impacts the turbidity and the sand problem.
Forgive the lack of detail! I pulled the details of the MPV from my invoice, which was the only record I had. I went to the property Monday evening to see the model, and it is a vari-flo XL.

Monday, the pool company replaced the MVP, but we still have blowback from the returns when vacuuming to filter. The pool manager is pretty stumped; he says it appears like a fine whisps of coffee with cream blowing out (another pool company suggested that sounded like silt or calcium buildup blowing out). As this wisps move into the pool, they fan out and float up to the top, causing a cloud.

Another pool company suggested that perhaps when they changed the sand (they pulled the sand out twice yesterday to inspect the laterals), the pool company didn't run the rinse setting. After running the rinse setting, we don't seem to get any blowback when the pool is running on any settings.

The water is still incredibly cloudy. Their plan is to see if it clears up enough tomorrow so we can see what's settled on the bottom of the pool, then try to vacuum this to the filter to see if is the same coffee/mocha colored wisps are blowing back.

I took the water to another pool company to have a test ran and shockingly there is no CYA (0ppb) and 1000ppb of phosphates. That's a whole new factor to now consider.

The pool company asked me not to mess with CYA right now because we need to try vacuuming and backwashing more this week. That is pretty frustrating because I'm afraid with Oklahoma 100 degree heats and zero chlorine, I'm just wasting boat loads of money on shock that's dissipating or being eaten by phosphates.

I'll put phosphate remover in tomorrow and share an update once the water clears up a little more.

Another pool company said that the sand replacement might be with the wrong type of or poor quality salad.
 
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