Wow, brilliant insight. I am certain she appreciates your help. Anyway, back to answering your question. I use the Hagen Nutra-Fin master test kit. I like it quite a bit, but it tends to be a bit pricier than the AP kits.
dont worry harlock. to be honest, my english is not that good, so when i read the post i didnt actually understand what he was talking about, but i had a feeling that it was some sorta "bull..."
i'm going to see if i can find the test you mentioned... thanks!