+1 - I like Metal Magic because its also helps lift stains. An alternative would be Jacks Blue for copper. Either way, please note that using a start up dose of sequestrant can cause a few cloudy days while you're filter catches up, especially if ch is higher...so don't assume a bit if pist treatment cloudiness equals nascent algae.
Re: the skewing of FC readings, I dug this up to post so that other posters don't mistakenly advise you to SLAM after the treatment if you report low FC. Slamming after a treatment wears off the sequestrant and can reintroduce staining. Tats why it was so important that you did the OCLT first
Re: the skewing of FC readings, I dug this up to post so that other posters don't mistakenly advise you to SLAM after the treatment if you report low FC. Slamming after a treatment wears off the sequestrant and can reintroduce staining. Tats why it was so important that you did the OCLT first
If you have difficulty getting a free chlorine reading after doing a STAIN SOLUTION #2 Treatment, test the Total Available Chlorine. Assume this reading is the true Free Available Chlorine reading. STAIN SOLUTION #2 often causes an error in the DPD #1 test; this reaction may last up to a month while STAIN SOLUTION #2 is still in the water.