CLEAREX WORKS!! I've just confirmed that Clearex does what it claims to do and I'm actually in awe of it. Starting a week ago, I fully drained my res of all nute solution. I even did a full rinse of the roots and hydroton with pure R/O water before refilling with 5 gallons of R/O & Clearex treated water. During the week, I added 1.5 gallons of R/O water everyday. Mid week I added an additional 60 ml of Clearex. Today, I decided to do a res change for the final 6 days and what I saw was amazing. I pumped the res water out into a white 5 gallon bucket and what I expected to be clear water was was actually as dark as the coffee I brewed this morning!!! (and we're not talking Kona coffee, I'm talkin French Roast yo!)
The Clearex is obviously leeching out built up nutes, salts, etc from the plants. I'm a believer!