Hey Sanguine,
I use a tea and it works great. Its really not hard to brew and i can show you a good cheap place to get all the ingredients. At the same time as killing root rot the tea gives the plant an organic flavour, which is something missing from growing in water. Its also a veg and flower booster so its really a win win brew.
I have to say though im so busy lately i just do not have the time to brew the teas anymore. My next grow im using the Haelia chiller as they work great and are totally worth in the investment.