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I've had a trouble free pool for years now, thanks to this website. This is the first time in a long time I've had to ask a question because I'm having a problem I can't figure out how to rectify. My pool has high chlorine (10), but is starting to grow algae. The other numbers are below...

I have a 33,000 gallon in ground pool that we are closing on our own and I don't know what we need to do besides shock the pool the day before. What other chemicals do I add? I need something I can pick up locally, not order online as we are closing soon. Thank you

I am still not confident about reading the cya level when testing with the kit. I had it tested at a local pool store and it tested at 21. They recommended I add 5 pounds of stabilizer. I have been adding it in about 2 pound increments to make sure I don't overdo it. Question 1: What...

I have been very successful for a few years following this websites advice …thanks !! We originally found this site because our cya was very high and I haven’t used tablets in years and only use liquid chlorine now. My cya is now very low and I’m wondering if it’s smart to switch back to...

I have your Pool Math App that I use every day. I also have the test kit. In the test kit, the card says that ideal TA for chlorine pool is 100-120. But in the app it says ideal is 60-80. Which one is correct? My TA is 70, my pH is about 7.0. After I get the answer about ideal TA...

I'm not sure where to post this, and didn't want the question to get lost on my other post, so figured I would try here. We have a portion of flexible PVC pipe going to our filter. When we had a leak last year, my husband said the flexible portions seemed to be pitted on the inside and he was...

My levels are as follows. Why would my water still be cloudy in the deep end ? It’s mild for sure , but cloudy nevertheless. FC: 5 CYA:40 PH :7.2 TA :60 CC :0 could use some help . Thanks

It's been hard to find liquid bleach in my area, but we found some from Sam's club that says it is 7.55% chlorine. Is this the number I put into the app or do I have to calculate some other percentage? Also, has anyone purchased Target's Up and Up brand of chlorine ? The price is...

This is only the second season we have had a mesh cover. In previous years we had a cover that was not mesh and when we opened the pool it was crystal clear. Our water is dark and murky. It doesn't look like algae. We have a lot of pine trees around our pool and so that doesn't help...

Hello....I was hoping to not need to bother anyone this season but alas, I have a question. We opened our pool a week ago, and this was the first season we opened it after using a mesh cover. The water was a deep green, whereas we always opened our pool and saw clear water. But because I...

I searched the forum but had trouble locating anything that says how to lower pH.....I mean the actual steps. CAn I just add the powder to the skimmer, or dilute it and add it directly to the pool? Also, does anyone have any suggestions as to where I can look for higher strength...

Hi, I posted last week about our pool not being able to hold chlorine. We brought up our low CYA (was 20, now is 40), and it seemed to be fine for a few days. But the last 4 days or so we are dropping our chlorine from 5.5 to 3 within 24 hours. Today the FC was 2, after it being 4...

We opened our pool about 2 weeks ago. Since then, the chlorine has been in range, except for the past 4 or 5 days where we add the correct amount of chlorine, but the next day about half of it is gone. I am using the Test Kit i purchased from this site for chlorine but am waiting for fresh...

We had a slight amount of algae in our deep end. We started the SLAM protocol 2 nights ago. We are adding chlorine to a 12 FC level, per the chart. Here are our numbers 12 (Thursday evening) 11 1/2 (Friday morning) 8 1/2 (Friday evening) 11 1/2 (this morning) Our CC is 1 currently...

We had our pool liner replaced, new water put in. Currently the CYA is zero, and we have been advised to add stabilizer. According to the Calculator here, it says to add 132 oz by weight. That is a lot. Will this damage the new liner at all if we use the sock method? (My husband is...

Hello.....we just had our pool emptied and refilled (new liner installation). The fire department filled it, along with us using some of our well water. What would be the best order for us to use now to start the season? We are assuming it will need to be shocked, as the deep end looks...

Just found out my husband has not been following my instructions about how much bleach to add, and I missed a few days of testing, so now my free chlorine is off the charts high (15). My CYA is 45, CC =1 pH is 7.8 Do I just wait now, with no swimming until chlorine level comes down? Thank...

I just received my test kit and although I posted the other day about having algae, I no longer have algae but not sure what to do next. I quickly tested the Free Chlorine and got a value of 1.5. My total chlorine was 3.0. My water is clear and looks great, but as I said we had algae for 2...

Hello, Years ago, this forum helped me greatly fix a problem with my pool water. We have had no problems until we opened our pool May 30. For the first time, when we opened our pool the water was green. Not horribly green, but green nonetheless. We brushed the walls, shocked the pool...