first reef tank - RO, DI & salt mix questions

[Quagmire]

For a small set up like that you could get away with using an Aqua Pharm tapwater purifier.Its a DI filter.It would probably only be good for your first fill up before becoming used up,even though the box says its good for 300 gal.You would have to check prices to see if this is cheaper than buying water.If you go the buying water route I would suggest going with Ocean Aquatics.I would think these guys keep a closer eye on their filters.Water from food stores can be iffy when it comes to purity. As for salt,talk to Wendel when your at Oceans.