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do you have any recommendation/tips for DIY fixes?

Good points! Thank you! The pool is old (> 20 years at least). Do you think any DIY fix is possible? Of course, I understand DIY fix won't solve the why problem.

Just 2 week ago, I noticed the water in my pool drops faster than normal. I did a bucket test and found the water in the pool indeed drops faster (pool 0.6 inch vs. basket 0.4 inch). This morning, I found a crack on the fiberglass wall (see the picture 1, the overall length is about 5 inches)...

Thanks, @ajw22. Which one should I use? Or the parts show here are incorrect?

My booster pump (model # LA01N) leaks from the volute side connecting with the pump. This is the 2nd time since last year. Last time, Leslie people repaired it. Now it leaks again and I try to see if I can repair it by myself. I opened the volute and found the seal on the impeller is broken. I...

I finished the SLAM process and passed the over night chlorine test. The water becomes beautifully blue, though think the pool water is not 100% clear yet. Thanks, @mknauss for your help. There are still some very fine debris at the bottom of the pool. I guess this is the reason the water is...

Thanks again. I did not know this method before. Following the instruction, I finally got the CYA to 40. It is very efficient (not wasting much water). Now I started the SLAM process. The instruction here says "Brush and vacuum the entire pool once a day". I only have a Polaris 280 cleaner. My...

Here is the latest update. (1) I finally purchased the pump and exchanged the water slowly because my pool is fiberglass. My method is to drain 1 feet of water first, add fresh water back, and repeat this process. I am not sure whether I am too conservative. Can I use a more aggressive...

Thanks. I agree water exchange may be safer in my case. I know there are underground water near my area (not sure whether any under my backyard). Regarding the pump, I would admit I have not use any pump before. I found a pump here at homedepot. It claims it can moves up to 2220 Gal. per hour...

Renting a sump pump from Home Depot will cost 40-50 bucks per day. Does it make more sense to get one? I saw some pumps on Amazon is about $50? Do you have any recommendation regarding the brand and model?

I finally got the overnight chlorine loss test results. I added 1 gallon of liquid chlorine before sunset and ran the bump for 1 hour. Test results: FC 5ppm, CC 1ppm The next morning: FC: 4ppm, CC 0.5ppm Does this mean my water is okay? Then what is the cause of the cloudy water?

Thank you! I did the extended CYA test today. My CYA level is around 150-160. So I am wondering whether I should continue to do Overnight Chlorine Loss Test or try to lower CYA level first. IIUC, if CYA level is so high, there won't be much Free Chlorine even adding liquid chlorine. If I...

My tf100 test kit arrived this week and I did a CYA test first as I know my pool's CYA may be high. Following the instruction, the black dot became obscure before the water level reached 100. So the reading is above 100 for use. Then I only kept 1/2 of the mixed water ( pool water sample + the...

Thank you. I had no idea what the blue line is. Never touched that before. Sounds like I should remove it. Shall I consider to clean my filter/or replace it in the meantime?

@ajw22 and @mknauss, Thank you. I don't see the vacuum to waste in my filter system. To make sure my understanding is correct, I took a couple of pictures of the equipment. I am getting the test kits and will do an overnight chlorine loss test and get back to you later.

Thanks, Allen. I added my signatures now. My pool uses a cartridge filter installed a year ago. I cleaned a few months ago because of algae problem. Do I need to clean it again? Happy holidays!

I am new to pool maintenance since this year. The pool water become cloudy in the late summer, especially after the prolonged wildfire in CA. The water Ph, alkalinity and Chlorine level are good. CYA is somewhat high (around 100). The two pictures shows the pool water and the small dirt (or...