The hammer is a tealish green. I had thought the additional elements from the salt would be beneficial, but I haven't seen any calcium or alkanity consumption in my tank, so I'm doing the water change to try and keep nitrates under control. I have the large bucket of salt so I guess I'll have to try and sell the salt or see if I can trade it at infinite aquarium .would it be safe to do 5 gallon water changes with instant ocean at this point to bring those levels down I'm running all the filtration since the tank is somewhat stocked now and I cycled with bio spira . I'm in the middle of a diatom bloom now that seems to be wrapping up. I'll PM you in regards to the swap...I appreciate the help!