How big is the res? Does the water level drop substantially? What combination of nutrients are you using? What's the mixing and pH testing process? What's your pH? How much does it drop and in what time frame? Way more details are required.

But an answer to your question.. I'd say no.
CFLhydro Reviewed by CFLhydro on . can nutrient in the res. evaporate? I noticed PH of my water in the rez. dropping as the day pass by..my question is can the nutrients in my rez. evaporate into the thin air? should I close the lid? thanks Rating: 5