pool chemistry

We closed our pool last year with some iron stains on the vinyl liner surfaces. We identified the stains as iron by using Vitamin C tablets. It was too late in the season to bring the pool to 0 FC and then wait to SLAM for closing. So we closed the pool and just opened it back up. After doing a...

Hello everyone, I just purchased a new home. It has a 17,000 gallon indoor, inground, geothermal heated pool. It’s 14 years old, original vinyl liner and all original pool equipment. It wasn’t used much by the previous owners, but was maintained by the local pool company who built it when new...

I honestly don’t know what to say other than I’m at my wits end. I’ve maintained a followed trouble free pool and the advice and knowledge for over 6 years with a 24’ above ground pool with zero issues. The last 30 days or so have been heck. I am unable to get the green out of the pool using...

Hi, I noticed a few small green spots on the walls of the pool. Here are the current measurements: pH 7.8 TA 8 CYA 50 FC 6 Calcium 250 Salt 2400 Just wondering what I need to do to get rid of the green spots before it gets worse. Thanks.

My wife and I are pretty new to pool care, we had our pool built last year but this is our first summer enjoying it and we've had a prety dramatic learning curve, especially with the heat we've experienced in North Texas. We're currently using 7.55% Sodium Hypochlorite Clorox Bleach from Costco...

I am ready to get off the Leslie merry-go-round and move to the TFP philosophy. Walmart has pool chlorine for $5 a gallon. I plan to buy them out. I am fighting CYA problems. I drained half the water last week and that got CYA down to 100. I tested this morning and it is considerably higher than...

Using a salt chlorine generator results in the generation of chlorine as well as sodium hydroxide (a strong base) that increases PH. Therefore, if I increase the chlorine generation % of my device, I will also be increasing PH. 2NaCl + 2H2O → 2NaOH + Cl2 + H2 OR Sodium Chloride + Water =...

Hi and Happy Memorial Day! Third year pool owner and I pretty much manage our pool day to day on my own and with the help of TFP of course. 👊🏼👊🏼👊🏼 This year (we just opened in Michigan) I noticed that my copper level is about 0.4 ppm and iron about 0 to 0.1 ppm, and wondered what people...

Hi can I ask when you say stabiliser, do you mean stabilised chlorine? I can’t find “stabiliser” I’m in the Uk. my pool is above ground. my readings are below. I just wanted to check, that I’m supposed to add ph reducer? (Got a bottle left from last yr) And that’s all? many thanks H

Starting this year, I took over taking care of the pool myself from a pool service. I’ve done a lot of reading and research, and testing! Unfortunately, in the beginning, I was using Clorox shock and pucks, and test strips. Since then, I’ve run into this group, and have switched to purer...

I’m new to this forum so bear with me. I have a 36k liner pool that turned green over the winter in FL and sat without running for 4 months. The walls and waterline have calcium on them that feels like sandpaper. We drained and refilled the pool and balanced the water chemistry. Problem is we...

I switched to the TFP recommended method last summer and I am happy to say that I have been completely algae free with very clear water ever since then. Definitely worth the effort of two partial drainings and then a 10 day SLAM cycle to get everything under control. I do have one concern...

So over the last week I had noticed that the deep end of my 16x32 pool had become a little murky, after testing it i realized the chlorine had gone now to almost nothing. I use a floater with three inch pucks to supply it. I refilled the floater and added a granular cal-hypo to try and quickly...

Hey all. I have a pebbletec, 27k gallon pool, cartridge filter. When I moved in in February, it was my first pool, and a friend of mine who works in the pool industry recommended and helped me install an inline tab feeder. After following this website for a few months, I decided eleven days...

I am aware of how stabilizer works with your sanitizer, but I was wondering what you should actually keep it at. Higher CYA means higher Chlorine demand but less burning off, Lower CYA means lower Chlorine demand but more burnt off by the sun. We all know that. But in your opinion, what would...

Hello all! First post/new to pools! We just had our pool installed recently and I'm doing my best to get up to speed on chemical care. One reading that came from the Leslie test in store (just to run as a base against my first testing experience) is they add the phosphate count (which was 300...

I've looked around this forum for a while, but this is my first post. The pool runs on bromine. The sun breaks down the bromine rapidly, so this morning I put 2 trichlor tablets in the chlorinator to try to use less chlorine bleach. My understanding is the chlorine activates the bromide. This...

Hi all, We’re in Canada and we’ve just moved in to a new house and I’m planning to open the existing ~16x32 (~19000 gallons/ ~72000 liters) winterized concrete pool. I haven’t bought a the recommended test kit yet but I have used a test strip as to get a general idea of the current water...

We recently purchased a new home/pool with sky high CYA. I emptied the pool this last weekend and completed a chlorine wash and power wash to the entire surface. I also cleaned and soaked the 4 cartridges in a TSP solution. I started filling the pool today (from homes city water) at a rate of 96...

We had our IG pool resurfaced in December and chemistry was balanced immediately after by our pool guy. I took over maintenance after a few weeks and was simply brushing, vacuuming, monitoring chlorine and pH levels until a couple of weeks ago. We had zero CYA because of the new water, so I...

Hey everyone, I am seriously loving this site and all the great advice. We just finished our pool remodel and had our pool replastered and we are in the process of doing a start up. I know many people on here don't like Leslies pool so I took my water to another store, as well as Leslies. I...