First post. Just received the TF-100 test kit yesterday revealing some troubling numbers:
CYA 120 (the cylinder is calibrated only to 100 - my estimate)
I would like to SLAM to get rid of some low level but persistent algae, but suspect it would be difficult with these numbers, especially CYA and am looking for suggestions.
In spite of the algae, water is basically clear.
Thanks for your help. Great site.