I have had good luck with Joe's, just having to make sure that none of the liquid touches any other corals.
As for the pepps, what I have noticed is that there is no more growth of aptasia in my tank. I always seem to have a few, and they are bigger which I don't think the shrimp is interested in them. But when I don't have a pepp in the tank, I notice several small ones growing. Figuring they are populating from the larger ones.
One of these days I'll go back with the Joe's juice, merely lazy most of the time