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Hello, Here’s my latest liquid chlorinated pool chemistry- FC - 6 CH - 225 TA - 80 (previously 100) ph 7.4 (previously 7.8) CYA 30 Last night I added 40 oz MA. My pool typically hovers around ph 7.8, sometimes a little higher whether my TA is 50 or 100 (or in between). I can reduce ph by...

Thanks again Texas Splash! Cute visuals too! ? Enjoy the rest of your summer...

Good morning Today, I only had a FC drop of 0.5, CCs 0.5, and water is still clear. Based on SLAM, I’ve passed the OCLT but since I still have some CCs, should I do one more day of SLAM just to be safe? Or is the problem really resolved and an extra day is just wasting liquid chlorine...

Thanks Texas Splash. Hopeful tomorrow I pass. Have a great day

Hello I went out of town and when I returned I failed an OCLT. So I’m on day 8 of SLAM. Yesterday, I passed the OCLT test but thought for good measure I’d do one more day of SLAM given temperatures around 100 last couple days and had some swimmers. This morning, I failed the OCLT again. is...

ok - that makes sense! I've struggled keeping ph down now that I'm strictly using liquid bleach and my fill water has a high TA around 250. So I've had to dose with muriatic acid pretty regularly just to maintain normal ph range which stays high normal. My ph doesn't want to stay any lower than...

thanks for the reassurance on my chemistry :-)

Just don't quite understand the reason for the unpleasant chlorine smell. so I started reading old posts and appeared it meant there was a problem. Ill do the larger sample as one suggested. And I'll take FC up to shock level and then perform an OCLT as another suggested and see what happens...

based on poolmath and table of contents "chemistry by pool type" my ph 7.6 shows within normal range and my 3.5 or 4 (evening reading) is within normal range. I add 2-3 ppm to get back to the recommended 5-7 range at night. I've read adding liquid bleach at night best time so it can be used...

Ok - I'll try that larger sample but will need to have better understanding of using 25ml sample to know how to interpret the results? Earlier this year i questioned if i had pollen so maybe that's it? everything was fine, chemistry balanced, no smell, clear water but had a light brown...

yes - based on my CYA, my daily target is 5-7 and I test every evening and add Liquid bleach to raise my FC up to that recommended 5-7 range.

Over the last several days, I've noticed a chlorine smell around/near pool more in the evening than other times and my water is clear. My FC has not gotten below 3.5 or 4 and I usually add 2-3 ppm each day. My CCs have been 0 or 0.5. Swimmers skin/bathing suits also smell like chlorine after...

lolololol :) - seems like it's that or something harmless anyway because it still showed up at SLAM level.

thank you Arizonarob! short of getting the tarp (because then i also need to figure out a way to secure it, remember it can be very windy here, gusts to 40 mph), let's say the discoloration hanging on the walls is gone - then one would suspect dirt/pollen? but, if it's still there? what...

i followed the normal SLAM procedure (based on my CYA 40, i took my FC to 16) and kept it there throughout the day (required very little adjustment as my FC stayed near 16, i.e. 15 was the lowest it got). i brushed twice and kept my vaccuum in the pool. This morning, my OCLT was 0 again (it was...

wow - and, i thought i used my vacuum a lot! :) the stuff on the wall i guess is what's in question now but like i said earlier, i plan to SLAM and then follow it with the SLAM instructions for the mustard algae and hope the discoloration gets resolved. if not, i'm assuming it's something...

yes (i was able to reach the 2nd step), i would say it feels more gritty but it's a very fine grittiness if that makes sense. i also rubbed a discolored (light brown) spot on the wall/side of the step and it had the same feeling as the wall without the discoloration. i don't really know how...

ok - thanks! i took some pictures this morning and i'm going to try to upload them. one of the pictures is of the steps (you should be able to see the "dirt", sediment, or possibly algae) on them. the light brown discoloration is also on the side/wall of the steps too but i'm not sure you can...

it looks light brown to me. i'll pay closer attention tomorrow if it appears to be yellowish/greenish. but, how would i confirm mustard algae and is there a reason i'm not experiencing a chlorine loss overnight? i tried uploading one (1) picture (taken with an iPhone) but it said i had...

Cleaned filter in the last week Right now run filter a few hrs/day or more if vacuuming. It was less in the winter unless it was near freezing

ok - so, we don't have a cover for our pool; we just leave our pool open (uncovered) year round. i keep it chemically balanced, cleaned (vacuumed), brushed, circulating (less frequently though since water temps are so low), etc. through the winter. of course we left the pump running non-stop...

lol - it's ok! yes, it reappears either the next day or the day after. it's been really windy here, and very dry winter which made me think it's dirt or pollen (springtime things are blooming?). but, it just won't go away and stay away. this week i started irrigating our yard (now that...

sure - they're in my original post but including here again. my last full suite of test results (conducted this past weekend) - ph 7.6 (i have been taking it down to 7.2 for a couple weeks now with muriatic acid to lower my TA; TA was 120, now 70 - see below) Chlorine - 3 (at the time of test...

Realized it won't let me upload my pic. Says it exceeds size limit? but I didn't have a FC loss overnight. Curious what this (discoloration on walls that brushes off easily) could be?

At 7:30am FC still 3; so is this a guarantee the light brown substance adhering to the sides of the wall is just dirt or maybe pollen? But nothing that warrants a SLAM? I attached a pic but you really can't see the light brown discoloration on the lower end of wall near the floor of the pool...

Thanks to both of you for the additional responses. The water's a little cold so not sure the "feel" of the sediment. I will try to get a pic tomorrow. We mowed today which caused a lot of grass to get in the pool so skimmed and brushed, now everything's stirred up. At 7:15p my FC is 3 so...

thanks Rob! for some reason i thought if there were no CCs i didn't need to worry so much about the need to SLAM. i will do the overnight FC loss test and see what happens.

i'm not sure if this is the right category for this post but didn't know where else to put it. i've been reading posts regarding sediment/dirt on bottom of pool and in my case, even adheres to the walls at times. i was concerned it may be something more than dirt so just want to confirm that...

thanks triptyx! - - - Updated - - - thanks; another said the same thing about targeting 7.6 instead of the 7.2