I got rock from TBS and my first shipment was ok however i ended up with some gorilla crabs. After not being able to catch the with traps i decided to give them a freshwater bath when i got my second shipment of rock cause i knew i would be rearranging. I dipped everything in freshwater to remove some of the hitchhikers and got the tank all set up. I have noticed that my turbo snails are really moving. I also have one sea cucumber that smelled a little 'strange'. I tested the ammonia after i got everything set up and I saw i went from 0 to about 1. I did a 5 gallon water change in the process of adding removing rocks. Tank is 29G btw.\n \nThis morning I tested again and its still at about 1. I did another 5 gallon water change and it didnt really seem to make a difference when I retested. I was thinking of removing the snails and the one stinky cucumber. Anyone have any other tips? How frequently can I do these 5 gallon water changes?