You have a RO system? Why dont you try using rainwater?
Im sorry to ask this but dont you think you invest too much in CPs growing for some NOT SOOOOOO BIG profit? The plant growers all around the world have millions and millions of plants which they sell monthly, but you only some small greenhouses that can fit about 2K plants, right? You pay for the heaters, you paid for the EXPENSIVE RO system, you paid for the transportation of all the stuff, you paid for everything! Is it THAT much profit? Like, in the end you will sell each plant for a range from 7 dollars to hundreds of dollars, but they take so long to grow, needs LOTS AND LOTS of care and you have to spend on so many things in that time!
Fieldz