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Are the copper and other metals a health hazard?

A friend who just sold his house with a pool gave me a bunch of something call Shock Plus 4 in 1 pool shock. The only active ingredient is Sodium Dichloro-S-Triazinetrione. Is that just a mixture of chlorine and stabilizer? If so I will use for chlorine and just keep careful track of my...

Thanks for the info.

My pool was cloudy. I did the SLAM process as recommended, ran the filter non-stop, and now it is crystal clear. Thanks to the people who explained it on this web site. I am curious about just what happened. The water was not green. It was a milky cloudiness. Once before the water got...

Is chlorine just broken down by direct sunlight or does heat also break it down? In an indoor pool would you need to use any CYA? This is just a theoretical question. I don't have an indoor pool and keep the CYA level in my pool at about 40. I'm just curious.

I use the drop test kit I got from here, the Trouble Free TF-100. I also occasionally take a water sample to a pool store for testing to double check my results. Last week I went to Leslie's. They have a machine that tests the water without any drops. It gave me about the same results that I...

Thanks everyone. You have given me some ideas.

Exactly what I have. I don't need to see a doctor to know it is bug bites. My only question is what kind of bugs and what to do about it.

I did a google on "biting bugs in swimming pool". There are articles about Water Boatmen and Back Swimmer bugs, and others. I never heard anything about these bugs. I don't see any bugs in the pool. I keep the pool pretty clean. Has anyone here ever had problems with biting bugs in their pool?

Could a noseeum get inside my swim suit?

It seems like every time I swim I get little insect bites. Nothing serious, just like a mosquito bite. I thought they were from some kind of small flying insect I couldn't see, but just now I got a bite under my swim suit. It could be that something like an ant had crawled inside the swim...

It is bleach with no additives. I know to check that. My question is how to find out the percentage of chlorine in it so I can compare it to other products.

I bought some bleach at Publix. It says "50% more uses, concentrated" but it does not give me a percent. How can I compare deals if I don't know the percent of chlorine in it?

In pool school it says CYA is typically kept between 30 and 60ppm. That is a wide range. Where do you keep yours, and why? Also, I thought I read somewhere on this site that it is kept between 30-80. Is 80 too high, or is there a difference of opinion on this?

In pool school it says: Why?

It has now dissolved but I will remember what you said in case I ever spill any again.

I did that this morning. It works great. Thanks.

Thanks. I'll try that.

What do you mean by squeezed? How do you squeeze it?

2 days ago I accidentally spilled some CYA into the pool. It sat there in a pile for 2 days before I noticed it. This raises some questions. I was surprised that after sitting at the bottom of the pool for 2 days it had not dissolved. Is that normal? Does it normally take a really long...

Several people mentioned putting it in the skimmer. I thought I had read somewhere on here that it was not good to put chemicals directly into the skimmer, but maybe that was just for chlorine. Is is OK to just dump it into the pool and let it gradually dissolve on the bottom or does that...

I thought CYA was supposed to stay pretty constant, but mine went down to zero over the winter. How could this be? I am looking at products on Amazon. CYA dissolves so slowly. Is it OK to use the liquid form?

Is there any good alternative to bleach, or what is the best way to get cheap bleach?

I live near Atlanta Ga. We recently had an unusually cold period. Everyone was worried, and there was fear that the power might go down. The drain in my sand filter is broken and there is no way do drain it. My pool guy gut kind of panicky. He lowered the water in the pool, and then pored...

I bought this house 11 years ago. The pool was full of rotting leaves so we drained it, cleaned it and refilled it. I have not drained it since then. I know the water is replaced by rain water, backwashing, and a hose when it gets low. Water is pretty cheap here. 11 years ago I think it...

Thanks. It's raining now. Will do the tap test tomorrow.

"How long has it been open?" I don't know. At least a few years. "Are the coping bricks bonded or unbonded?" I don't know and don't know what bonded means. How can I tell?

"There should be an expansion joint all around with caulk in the expansion joint." I don't see any caulk in my expansion joint. Should I caulk it? If there is caulk in there can it still allow for expansion?

Thanks for the link to the info about expansion joints. Very helpful. The thing I don't understand is that on one side of the pool there is the gap which I now know is the expansion joint. On the other side of the pool, the concrete comes right up to the coping with no expansion joint. Maybe...

Take a look at the attached photo. There is a gap of about 1/8 inch between the concrete deck and the pool tiles. (Tiles may not be the right word, but you can see what I am talking about. This gap is only on one side of the pool so I think it is caused by shifting concrete, but I want to...