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So we have a leak that is defying explanation by three different pool companies and the internet. We have not yet ponied up for a leak detection company, mostly because they have not called me back. Our pool is inground vinyl with a standard hayward sand filter, installed into the side of a...

Just returned from pool store and they agreed that all of my chemistry looks good and they didn't find any copper, iron, or nitrates so this remains a bit of a mystery. They suggested my chlorine could be high enough to be reacting with something in the water that is turning it colors, which, I...

We've had a pretty terrible start to pool season, starting with taking off the safety cover to find Surprise! no water in the pool whatsoever, save for maybe 3 inches at the bottom of the deep end. Took several days but we identified two separate holes in the liner which we patched and luckily...

Huzzah, all SLAM tests passed, pool opening is cruising along (and I'm guessing it's swimmable right now but I'd like to get the water totally right before we put the ladders and such in). Test results this morning: FC: 8.5 CC: <.5 pH: 7.3 TA: 80 CYA: 50 I didn't bother testing CH this time...

Thanks, I was thinking along the same lines but it's good to get confirmation from someone who knows better!

Yay, test kit is here! I think things are looking good, but I'm a little unsure about the CC. So, last night in intervals, I added CYA solids, then bleach to shock levels, then 4 lb baking soda because my original TA was 40. Everything looks like it's doing what it should, but I know CC should...

Just wanted to update here since it seems from forum searches and replies there's not a ton of experience with filling with muddy lake water! So, still waiting on my test kit (should arrive tomorrow) but looking at the muddy water was depressing and I was curious what the pool store would say...

Sorry, I was unclear - Friday night was the night it went up 10 PSI overnight, which was the first night we ran the pump after we filled the pool from the lake. Last night (Sunday night, two days later), same water, pump only went up 2 PSI overnight.

Wow, okay, I'd never heard of that. The filter did seem to be filtering before this - PSI went up by about 10 overnight and we backwashed - so it seems more like the particles are too small but if SLAMing doesn't seem to have any more effect today, maybe we'll try that tomorrow. Couldn't hurt...

We're on well water, which is the reason for using the lake - the previous owner said he had the fire department truck out water once and it was roughly the same amount of dirty as the lake so he'd recommend the lake(?) so we gave it a try. Test kit should hopefully arrive Wednesday, until then...

Ha, already working on that, but I didn't see anything specifically addressing what else might be in lake water that floc wouldn't handle, or if there is any reason other than live algae that the pool seems to have eaten up all of its chlorine in a single cloudy day. Also not really sure where...

Hi, hoping some of you have some ideas for us - we've got a new-to-us 21K gallon inground pool. Sand filter, no idea when the last time the sand was replaced though the pressure seems good. (Vinyl liner, if that matters.) The house is on a well, so the previous owners had rigged up a system to...