ocean water in reef tanks?

[mike31154]

....and there are hobbyists out there that use..gasp... natural sunlight to light their glass boxes. Search SolarTubes and see what you find. Up here past the 49th parallel, you'll still need some supplementation though, especially during the short winter days. Wouldn't need much extra for a FOWLR though.

[Chipie]

I live right by the Atlantic Ocean and have used Natural sea water without any problems. Salinity is at 1.022 so i have to add a bit of salt to bring it to 1.026. There's quite a few reefers from the Maritime provinces that use it. Where i live, there's not much pollution so i just get mine off a fishing warf on Miscou Island(15 min from my house) Google map Miscou Island