I bought my TF100 Test Kit last week.
I then saw the Trouble Free Pool Supporter link an dclicked on it.
I saw that TFTestkits will give $10 off a TF100 kit if you are a supporter.
I thought I was too late but joined TFP supporters anyway as this site has already saved me hundreds of $$$ and countless hours.
Just for a try, I called TFTestkits to see if they would post-honor my TFP membership and the woman on the phone just about fell over herself to get me my $10 refunded!
Very nice bonus for joining TFP and buying from a supporter of this site!
Use these kits and buy from them, it is worth it!