Miraculous Meds
Well-known member
Well, I can make 10 gallons of RO water, and 10 gallons of waste water. Or, I can make 5 gallons of RO water, 5 gallons of waste water, then add 5 gallons back.
Where I am, we are in a drought. Saving 25% of the water, and not unnecessarily buying a bottle of elements to add back in, are all ways of saving money and taking a lower impact on the environment.
By limiting the amount of water going through the RO membrane by 1/2 we also extend the time between filter replacements by twice as long. Let's say he gets 1,250 gallons before replacing the carbon filter and membrane. The cost of the RO water per gallon is about $0.14 when we add in the full starting setup. So, the grower could spend $1.40 on a 10 gallon reservoir, plus the cost of Cal-Mag, or the grower could spend $0.70 on 5 gallons of RO plus a few pennies for 5 gallons of tap. After the filter replacement of about $65 the cost drops to only $0.0528 per gallon.
Cheaper is better. Less impact is better.
Good points. I respect ur reasoning here. I guess im just too much of a lazy person to figure out how to adjust my feed and use some tap water like u suggest. But I see now u make a good point.
Thanks for the clarification.