Re: What about Aquarium Grade Calcium Hydroxide?

well, JS, here in Canada, that's what I've bought. I hate to use the phrase "common sense" ( as it's been getting such a workout lately!) but, it does seem to me
also that the aquariasts would want a high grade of C.H.

Many of them are propagating very delicate corals, etc. Not to mention the fish...

so, yeah, that's what I'm going to try--