i just got 2 of them myself, I assume you run it 24/7 but i haven't started using them yet.
hello ....please use plain water or mild nutrient fresh water to your resev. in between water changes.........everytime you add for example 5 gallons to the hydro setup.............please use plain water or light nutrient water ... for atleast a couple of hours so ... the system runs out the extra salt buildup...then change the water again and that should take care of that problem........rinse in between recharging....