I am currently in the beginning stage of setting up a 125 saltwater reef ready w/ a wet / dry filter as I am putting the final pieces together I have run into a stumbling block with the water issue.

I have installed a sediment filter on my water supply thinking that this would be enough filtration however everyone I have spoken to is saying I would strongly consider installing an RO or a DI system so my question to you is it very important at first to
go with a RO / DI system or store purified water or can I get by with my sediment filtered tap water? HELP ANYBODY !!!!!!