The LFS I purchased the Chemi Clean from has decided not to carry it in his shop any longer, there have been to many unfortunate stories with this product being used properly with adverse effects, yes we know to follow instuctions to a tee, and yes it does mix clear 99% of the time, but what if it doesn't in those few times? it can be tragic, and yes we all know cyano is not really an algae.something real hard to think about!