My concern about this product is basically ethical. As long as there is no description what is active and how the active mechanisms work. The weak description of it have make me a little scared. If this work (and it looks like it work), if it is a bacteria that eat algae, effective against macro algae and can be overdosed - there is reasons to be scared.Has there been ethical discussion about using this product? By analogy - If you had barking dogs and there was a pill that stopped most dogs from barking, but killed a small percentage of them, would you give your dogs that pill?
Sincerely Lasse