Recent content by daveCBP

If the Trichlor tab doesn't work, then it could be metal staining. To test this, use the sock trick: put some dry acid (sodium bisulphate) in a sock, and let it sit on part of the stain. If it lifts where the sock has been after a few minutes then it could well be metal staining. If you suspect...

Thank you all for the replies :cheers: , makes me feel a lot better about it. As I said, I'm still finding my feet in the industry, and it means a lot to me to do a job properly. Can't win em all huh. Really appreciate the welcome here too, I've only just joined the forum, but i can see it's...

You have a point about the shock value. I was taking readings of 60-80 by the time I had to finish the job. I advised them to dilute it further, but I don't think they did. So if the CA was still too high, then whoever "cleared the pool in 3 hours" must have shocked to 24ppm like you say...

The pool was cleared mainly though dilution, having replaced so much water, but yeah, I shocked as well, to 8ppm FC, to kill the algae and used alum sulphate as floc to remove it from the water. It wasn't crystal clear by the time I left, but it was greatly improved. I was working on a deadline...

I recently started a business servicing pools. I was called to a green pool, tested it and found these results: pH - 7.8 FC - 0, TDS 1200, Cyanuric Acid 180... So I figured that high cyanuric acid was locking out any chlorine, and surely the only way to lower CA is to dilute it? Same for TDS...

Hi, I'm new to the forum, just thought I would introduce myself. I started my own swimming pool maintenance business last year, and so far it's going really well. I've worked with pools for almost 6 years now in one way or another (started off as a lifeguard!) and thought I would take a chance...