I know I'm gonna get lambasted for this but I have always used Tap water in my tank. I had a Sebae anemone (Heteractis crispa) and when I bought it it was bleached although I didn't know it at the time and it colored up and did extremely well, it tripled in size in about 6-7 months even though I only have 130w of PC's in a 42gal tank unfortunately it wrapped itself around a heater and perished. Just my 2 cents
You can see it begin to change color at about 3 months
Here it is just before it perished
