Instant Ocean herbivor grazing blocks

[Monkeyfish]

Anyone have any experience with them? Can they be left in the tank for the day or do they foul the water?

 

[The Shrimp X]

Ive actually been trying these out. they dont seem to foul the water up at all, but they also dont really last more than an hour in the water. Though i dont put a whole block in, i maybe take a small chunk and mush it into a rock.

 

[lhm nole]

fish hate it