Poly Bio Marine makes the Kold Steril units, they are nice because there is no waste water and if you want water in a hurry all you do is turn it on. The down side is if you have any phosphates, silicates in your water you will need the alumina media and you will need to run the water through slower. The alumina media does not last that long if you have high PO4
and Silicates. I have a KS and RO
and I switched my reef over to KS and ran with that water for about 6 months and I did not change out the alumina media when i should have and I got cyno real bad. I also noticed my corals were not growing much. Which PO4
can effect coral growth. So I switched back to ro
and got a phosban reactor for the cyno issue and what a difference. IMO
there is no better water then ro
, if your going to run a fowlr
that a KS would be great, I use the KS on my fowlr
with no issues.
Check your water before you buy the ro
unit and if you have PO4
or Nitrates get the duel DI
unit. I run a duel DI
on my unit and it has helped out with my PO4
issue. A TDS
meter is a good investment, do not go by color change alone and buying non color change resin is cheaper at most places.