is the way to go. I recently returned to SW
and set my 75gal tank up about 4 months ago with RO
. Prior to that I had a 20gal SW
going until I finished some remodeling to make room for the 75 Gal
. I used tap water with conditioners in the 20gal. My water tests always came out good except nitrates were always on the high side and I was getting brown algae. I continually did water changes to try and reduce the nitrate levels. Finally, the light came on
and I tested my tap water to find that the nitrate level was the exact same level as what I was finding in the tank.
Test your tap water, but for the money RO
is the best IMO
. It cost me $35 for water to set up my tank and now about $5 a month for water changes, but the quality is great!