This is gonna sound weird, but how about making a "necklace" out of pantyhose and rice? Rice is used to keep salt dry, and you just need enough surface area, right? I only did this for the drying (made a rice necklace sort of thing), but what I did was poured maybe a quarter cup of uncooked rice into the hose, tied a knot, poured in more, tied a knot, kept doing that til I got to the end of the hose. Hung that in my drying box, et voila.
How are you growing? If it's hydro I don't see the rice thing working at all because of evaporation as well as transpiration.