I used tap water for the first 3 weeks or so of having my tank and let me tell you it's been an uphill battle trying to reverse what it did. I have high phosphate tap water and my tank was at 5ppm when I was using tap. Since corals are my big thing I have to get the phosphates down. I'm still stuck at 1ppm which is still too high. I've been pwc
'ing my little heart out trying to get them down. And the resulting hair algae was no treat either. lol
Anyways, until I get an ro
unit I get my water from the supermarket water machine for 30 cents a gallon. Cheaper than the LFS
and I've tested it to be sure its good.
I also have NO space under my sink or anywhere else in my house so I also have that issue. lol
good luck, I'll be watching out for your new setup