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Thanks Joyful. Note to self: don't use dry acid for testing like that again :) My pool in vinyl so I hope i'm ok! (only a small area tested anyway)

I've noticed brown stains in the pool recently. I found this post (Brown stains not from iron) which recommends vitamin C tabs as one of the tests. I assumed I need something acidic, so I use dry acid (the stuff I use to lower pH levels). Placed a bit in a sock and "painted" the pool wall, and...

I recall some post on this forum about cleaning the SWG - i'll look it up. The FC has been dropping a little. I'm currently testing FC/CC every couple of days, on average, and adding some more liquid chlorine if I think it needs it. Can't rely on the SWG at present. The FC drop doesn't help...

Ah yeah, I meant CC instead of FC. Updated my post. I've not checked for calcium build up. Think it might be worth a quick look when I get chance. The deal with the landlord is that I return the pool in the state that I found it, when leaving. I'll have to check the agreement in more detail...

I've added another 125Kg of pool salt. According to test strips, salt has raised from 3800 to 6100, which is about right for the size of the pool. SWG LEDs are flickering between 10% to 20% (EDIT: it's back to just 10% now). At this rate i'll need to put enough salt in and it'll be like sea...

Hey, Yes - pretty sure I did. I can't find the article on the website, but I believe it was (a) clear water, (b) CC < 0.5, (c) < 1.0 FC loss over night.

The SWG has 10x green LEDs. Each one lit = 10% output. Only the 1st one lights up. If i turn it up more than a really low setting, another (yellow) LED flashes meaning "low salt". I'm testing my salt levels with a strip that I put in a little water, then I watch some white peak rise and then...

Thanks, all. The water is finally clear! Latest readings: CYA: 45 (this has dropped 15 over the past 3 days, but i've had to top up water a bit so it's diluted pool water a bit - also i'm not sure on the accuracy of my first CYA test of 60 - my eyesight is pretty good and I can see the black...

I tested the pool again tonight (after sun-down). FC dropped to 10.5. Kids had been in pool for an hour. Can FC drop by 5 over the course of about 13 hours through the day? I've just added 12.5L of liquid chlorine. Pool size is roughly 50,000L. That should raise the FC to 40 (well over the...

Thanks all! I did another FC/CC test this morning at 7am. The sun had been at a small corner of the pool for about 20 minutes, best guess. FC had dropped to 15.5 (was 17 last night) CC remains at 0.5 Pool still slightly cloudy/green tinge. I'll get more liquid chlorine tonight after work and...

Hi, I've been a lurker on this website/forum for a few weeks now, due to having problems with a green pool. Followed lots of tips + advice on here to get my pool water clear again. It's taken a few weeks, using a rubbish dip-test kit while waiting for my Taylor K-2006 to be imported from the...