No you don't have to add salt just fresh water.
This is the ATO I use: https://www.marinedepot.com/ps_ViewI...s~vendor~.html
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90 Gal, 30 gal sump w/fuge Mag 9.5, CPR OF, JBJ ATO, 2 Koralia 4's, Euro Reef RS135, Phosban 150, 90 lbs LR, 2x250 MH+4x65PC and MoonLights. Emp Angel, Hippo Tang, Sixline Wrasse, Perc, Naked Clown, Naso Tang, Green Mandarin, Randall's Goby, Lawnmower Blenny, Flame Angel, cleaner shrimp, coral banded, BIG cleanup crew, Some Zoo's, RBTA, duncan, SPS, some hitchicker shrooms and a cat's paw. |