CO2 IS NOT REQUIRED FOR THE PLANTS IN THE WATER - BUT IN THE AIR IS GOOD. AS FOR LOW CALCIUM, DEPENDS ON THE PLANT SPECIES.

MOST NURSERIES WANT TO CONTROL THE WATER TYPE THAT IS BEING FED TO THE PLANTS, EITHER BY MIST, SPRAY OR DRIP SYSTEM. HOWEVER, THEY MAY BE OTHER AREAS WHERE YOUR TECHNOLOGY WORKS.

WHEN YOU SAY HIGH CONDUCTIVITY - ARE WE TALKING SODIUM OR OTHER METALS?

The ions removed are only calcium, magnesium, and alkalinity.  When the water is sprayed, the CO2 of course enters the air, where it is available.  Thanks for the reply,

To my knowlege it is bether to have Calcium in wather, expecialy in vegetables such are pepper and tomato. Some flowers needs wather low in calcium like anturium, expecialy for huminidication, becouse calcium leave stains on the leaves who are for sale. CO2 in the wather is no good, becouse roots does not do fotosyntesis, roots needs oxigen for breeding. Thats why you in NFT system wather is aerate to have more O2. When O2 is low roots die.

Smile1: What process does your company use for dealkalization? If it is a weak acid cation resin, you will need to worry more about whether they are allowed to have acids around or not.

I just finished a research project that is looking into the use of CO2 to reduce the amount of the fungal spore Phytophthora (root rot) in irrigation water. Initial research showed that the amount of CO2 (versus air) used to pressurize a vessel contributed to a higher kill rate in fungal spores. More research is being conducted to determine what it is about CO2 that is killing spore. Most likely it would be weak acid interactions that are making the spore coat more susceptible to mechanical damage.