tigershark
Member
Is it safe to use these on a new tank? I've read that carbon takes out a lot of bad stuff but also good stuff in the water and it might be a problem when the tank is young. I've also read that phosphate will slow coralline growth and it is commonly in tap water, which I use in my tank. I would like to start using RO/DI water but my budget is really tight right now. At least Im using cold tap water and heating it up myself