I have a 125. Probably have over 30 Astrea snails; 15 red legs; and 30+ blueleg herms; 2 Brittle stars; 15 Margarita snails; (SP? not the best speller) 5 pepermint shrimp; 1 purple lobster and 1 squomosa clam.
I probably should have more snails and herms, but I get by fairly well with this amount.