best water there is for your tank that we can get. filter replacement all depends on how bad your water is. If you have a lot of metals, nutrients in your water the di
unit will burn up fast, you may be able to make 200-400 gals of water before you need to replace the DI
unit. The carbon, micron filter last longer. My buddy has a TDS
reading on his tap water at 700ppm and he burns through DI
's fast. My TDS
is around 180 so mine last longer. There is no set number of months anyone can tell with out knowing what is in your water.
worth every penny...... SW
is not a cheap hobby if you want to do it right. Your fish will thank you for it
total disolved solids.=== crap in water... some good some bad..