I have a Taylor K2005 test kit (came with the pool from the builder), in addition I bought those aquacheck test strips(for quick read comparison). The book doesn't tell me how to test for FC above 5 PPM. is there a trick? The strips will show up to 10 PPM but aren't as accurate. (FYI there is light at the end of the tunnel, i ordered the TF100 everyone on this site raves about today). Until i receive my new kit any suggestions would be appreciated.