Originally Posted by gleach
How long can you get away with a lower salinity level (while using ato to slowly creep it up)? And what is the best salinity level for a reef tank and why?
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Before I say this - I've read this while researching on many sites, I'm new to SW
so it's not from experience:
Natural saltwater is 1.026. Some hobbyists like to keep their salinity at this because it is natural. I also find that hobbyists with reef tanks find that 1.024-1.025 is acceptable. Many LFS
keep their salinity lower, usually between 1.020-1.023 to reduce the risk of parasites and to keep more oxygen in the water for the fish.
So it depends if you're keeping a FOWLR
tank or a reef tank. The conclusion I have come up with is that between 1.024-1.026 is best for reef tanks.