I took the cover off my pool, and there it was, the Green Monster. I couldn't bare the sight of it, so I decided to start killing it right away. I am waiting on the Taylor FAS-DPD Kit to get here, so I can properly measure for the high level of chlorine. Until that time, I am working with a simple 4-way test kit. Never really knew there was a proper test kit that I needed until I found the information here. I have read that you can dilute your test water with distilled water to get an approximate high lvl of FC (if I understand it correctly). My question is this. My test kit say to put 5 drops into the water. Can I put just 1 drop in the water and then take that reading and multiply it by 5? I am not a chemist by any means, so I don't know the whole reasoning for putting 5 drops in it. If it does work that way I would like to know the reasoning behind it, just for my own desire of knowing why things work the way they do.