Adding DI to RO?

[mike31154]

Sounds like you're just starting out with a saltwater tank. Welcome to the forum by the way. If you are new to saltwater, take your time and do plenty of research. It's going to be a while before the system is ready for any livestock. If there's nothing in your system at this time, then there should be no problem using just the RO water for the time being. It will be fine sitting in the tank indefinitely. Just ensure the tank is good and clean, free of contaminants. You might want to provide a little circulation with a powerhead, especially if you're adding the salt mix.