Yes. Despite the RBTAs splitting (we have 10 now), they still prefer the GSP. It was a gift from a co-worker they had sitting in their sump. First thing we added to our tank when we set it up. Grows over itself but can't get off the rock island (we keep it 3" or so away from the rest of the rocks/glass).See, now THATS beautiful!!
Do your clowns host in it?