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Thank you Waterbear. I'll try your recommendations.

Thank you. I am very grateful for the swamp cleaning article. I am using the TF testkit and have been going through titrant big time (I just ordered more). I was hoping for an even quicker way to get a good idea of the chlorine level now that I have a sparkling pool.

I cannot distinguish yellows in OTO test levels 2-5 look the same to me. Any advice? I've seen you are supposed to look in natural light, but it is usually late by the time I get to test. Do you know of other quick tests that are easier to distinguish? Can I use a ORP/pH meter instead? I saw...