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Thank you so much for your responses and advice for what may come over the next few months. Attached are pictures of our pool as well as the crack as of yesterday before we worked on it. My husband swam down there to stop the water loss and now, 12 hours later, it is holding water. For now...

Hi, I have a 30 year old fiberglass pool that has many issues right now - chalking, blistering, and most importantly, a crack in the sidewall in the 8 foot deep end that started small about 5 months ago and is continuing to get bigger - likely due to undermining of the base as a result of...

Does anyone have any ideas of what I can do to try to get rid of these stains left over from leaves and debris left over from winter? Thank you for any suggestions! ~Colleen

Well, it seems like keeping my chlorine up around 8 for another couple of weeks and some additional brushing has not made any difference in the stains. I have some close up pictures of the stains from my underwater camera. Note the close-up of where the worm found its last resting place -...

Hi, Maddie! Thanks so much for your quick reply and for the information about the low pH and the copper pipes. We just installed the heater this week and I didn't know about that. The good news is, we haven't even run the heater yet, so that can't be the cause of the stains. The tree debris...

Hi everyone, I'm starting my 4th year as a pool owner. We bought this house with a 25(?) year old pool. I follow only TFP guidelines and I generally use only 12.5% liquid chlorine to keep my chlorine levels correct. Right now, it's too chilly to swim here near Philadelphia, so I'm using some...

I believe we have SLAM success! My FC held at 17 overnight, CC is 0 and the water is sparkling and perfect. Thank you so much for helping me through this process. I have learned a lot and I'm very appreciative for all of the great advice here!

5:40 am test results: I woke up to rain this morning, so I'm not sure if that is playing a role in this or not. I also cut my grass yesterday evening. I use no chemicals on my lawn. Grass does not get tossed directly into my pool when I cut, but I'm sure some flies around and lands in there...

9:20 pm update My husband recalculated our pool volume, and since it is an irregular shape, the best estimate is that our pool holds 18,500 gallons instead of the 20,000 we originally thought. I retested at 5pm to find FC at 16, CC at 0, CYA dot disappeared at 42, and since I could never get...

Ok, thank you for all the insight. Here is where I am now after digesting what you have all said and testing again and yes, love using the SpeedStir: 1. I am now aiming to supersaturate my chlorine test with the 870 powder to thereby eliminate the possibility of not adding enough and skewing...

Thank you both for responding to my questions! It's a beautiful, sunny day here, so a perfect time to retest CYA. I looked at the images for the test, and I understand how to perform it. I tried the 50ppm sample 4 times in the manner that Texas Splash recommended. I got an average of 40...

I am just starting my second season as a pool owner and I have been reading around your site extensively. I have also read Pool School. I am so appreciative of the advice given here! I feel like I have finally found a place that offers truly reliable, scientifically-based advice, so thank...