it looks like it runs off carbon blocks.i was expecting a di system but i was surprised that it had three carbon blocks. Filter edia (Three Types of Filtration): Barrier Restriction -sediment fliter, Adsorption - carbon, Absorption- carbon.... from the site i dont get that it gives you 0tds water.
from RC
Kold Sterile is designed to produce quality tap water, not pure water for a reef. The pH and alkalinity will be higher than ro/di water which can be a good thing, maybe.
The optional alumina adsorber does remove silicates and phosphates but you'll have to slow the flow to a max of two liters/min. If your water has high levels of these compounds the flow rate has to be even less.
Poly-bio-marine does not guarantee their product, except if it's broken in transit or defective. Check their guarantee on their website !!!! 30 days, manufacturing defects only!!!
Before buying their product check your water parameters at
http://www.waterdata.com , forward this info to poly-bio, and ask if their product will work with your source water without further water treatment.Ask for a suitability guarantee in writing!!!
If it will work for your application, I have a unit available for $175, needs all new media(about $40). It won't work with my source water unless I'm willing to add muriatic acid to the resultant water to lower pH. (and start buying the alumina adsorber in bulk)
Poly-bio does not dispute that their product does not work in my application without using vast quantities of adsorber and adding muriatic acid to the final product, but four requests asking them to take it back have been ignored.
Kold Ster-il for sale !!!! I'm serious, 2 months old, needs new media.
Agu