My question was how many though
If your tank was lacking biodiversity after twenty seven trips to a local tidal mud flat teeming with a billion amphipods I might accuse you of keeping too many mandarins heh
The majority of us are landlocked, ipsf closing, we’re diversity doomed pretty much
Yes, I have used ipsf. I get much more diversity from diver collected, Gulf of Mexico, live rock that is aquacultured as a sustainable source. Tampa Bay Saltwater & Gulf Live Rock are two such sources.
http://www.gulfliverock.com/premium-decorative-rock.html