my tanks are over crowded and my rays appear fine however i know this is not good long term. i have been working on a fish room for ever i was suppose to have this done a long time ago. my interest has grown as well as my ray collection. so i am doing water changes twice a week and still have ammonia spikes. watch water quality closely and be prepared to get a larger housing. i wish i was patient and just started out with something big.
John
John