my 55g tank just finished its initial cycle. ammonia nitrite at 0 nitrates were 5 then i did my water change,sg is 1.025 and the temp is 79. i'm not planning on putting any fish in for another month or so maybe longer. i was wondering when i could put some nassarius snails in there to stir up my sand bed. the sand wasn't live to begin with and i added some live sand from another memebers tank over the weekend. should i wait longer to put the snails in. its fine i don't mind waiting just figured putting some nas snails in there would help get the sand stirred up a bit. any advice would be appreciated. if i'm being to cautious about adding the fish(don't think its actually possible to be to careful in this hobby) please let me know.