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You found it. That is embarrassing:).

This is the first time i have had an issue.

I been using pool math for a year, and today i went to put acid in and it shows i need to add -24000 oz of acid. I can't figure out how to fix the amounts. Any ideas?

Great thanks.

Question on boosting the chlorine for 24 hours at mustard algae level which is 29.4 for me, do you have to maintain it at that level by checking each hour and adjusting, or do you just get it to 29.4 and done?

Ok thanks for the help.

Where is the mustard option in pool math? The article talks about it but don't see it.

It brushes off with my finger or pool bush.

I am in the process of slamming my pool following the advice in the pool school section and was reading through the other articles and came upon one on mustard algae. While reading I start to think about the stuff I thought was pollen. So I took a pic of it to see if anyone thinks it is...

Updated my sig. Question I need to put 1 lb 11 oz's of dry. Do i stick all in a sock or incremental amounts like start with half?

FC has dropped to 5 ppm, so I turned the salt cell back on, trying it at 40%, see if I need to increase. I have dry stabilizer, with the sock method am I putting it in a actually foot sock and sticking that in the skimmer then running the pump for 24 hours?

I measured my CYA and it says 60. Path math is telling me to add 70 oz of liquid stabilizer. Do I add it to my skimmer?

I had the same thought and pushed my chlorine to 8 ppm. Just tested and I am now at 16 ppm after two days. So I think I am now building chlorine. I shut off the salt cell and I am going to let it drop. Then will see if I can hold it. I will test CYA on Wednesday. Thanks for the help guys.

The test kit I am using is the TFTestkits TF-100. I am using the poolmath to determine how much to add. I added 50 ounces to get to 4 ppm. I will try test at the return.

The pool just got built. The pool is been on salt for a month now. I have been manually putting the chlorine in myself to keep it there, but it keeps losing the chlorine. The over night test didn't see lost due to night, so it is the sun eating it up.

8 hours. I was doing 60% at 8 hours.

I had it at 60% but upped it to 100 to see if it stays stable. It is a IC 40.

I added the 3 quarts of liquid stabilizer Wednesday. Tested in the morning.

I have a in ground 13471 gallon plaster salt water pool. My last readings today using TF 100 are: FC - 0 CC - 0 PH - 7.5 TA - 120 CH - 325 CYA - 60 Salt - 3400 I have been fighting to get CYA up to 75, this month I put in total of 4 lbs of dry using sock and 3 quarts of liquid and still has...

The pool is still being built so I don't know. I have heard at some point it needs to be re-polished, so we will see. I am only pay 1000 for it, so not sure why you have such a high up charge. Now if it last as long as plaster which can last from 15 - 25 years, that is not bad for 1000 bucks.

If you can go with the biggest filter you can get. The contractor will say you are fine, but my neighbor built his pool with the standard filter and he has to clean it constantly.

Here is a pic of the equipment placed down. Thanks to the community in helping me with some choice upgrades.

@bdavis466 Thanks for the response.

The dimensions are 14 by 31 with it bigger on the sunself side. I didn't want a complete rectangle pool but my wife wanted to maximize space. So the compromise was a L shape. Here is what the finished product should look like *cross fingers*.

Question, saw something weird in the pool shell. Is it something that I should bring up to my contractor? Not sure if it rust or ground water.

New build in Tampa, Florida. Been meaning to get these pictures uploaded as the build progresses. First pool ever and very excited. Here is the before: Here is the prep: The dig: The framing I assume it is called, not a pool expert: Here is a pic of it after being shot: And the plumbing: