Ok Tiffany, I'll start. It kinda depends on what sort of parameters you want to keep with your tank, as all salt mixes can be different in this regard.
I tried a bunch of different salt when I first started not long ago, I started with instant ocean reef crystals, then tried Fritz RPM, then tropic marine pro, then reefers best salt for a while. Now I'm going back to fritz.
Instant ocean is very commonly used and seems like a cheapest price point. But there was a thread earlier on this forum about Fritz, and it seems to be a favorite amongst many reefers here.
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