I noticed flushing with Ful-Power at 50 ML gallon, that the PPM leach out of the soil very, very quickly. Running 1 gallon of it throug a 1 gallon soil container resulted in leaching out about 1500 PPM and left about 800 in the soil. I imagine a lot of this wasn't broken down before interacting with the Fulvic, so I'm going to start using it maybe every other week at low rates and keep track of PPM.
I think at the very end, the last flushes, I'm going to start with Herc. flush to flush out excess salts and re-balance PH. Playing with Ful-Power I realized it tends to raise soil PH a bit, so following with Ful-Power after doing a Herc. flush would hopefully maintain a better PH. I think the Ful-Power flush will break down the salts the Herc. tied up, as well as wash away any excess. Then following with the Herc. flush again at the very end would make any excess salts either flush out or not available to the plant.
I'm just trying to figure the best order to do this in. Maybe the first Herc. flush and first Fulvic flush should be with minimum run-off, and then follow up with one of each again with heavy run-off, then do the final week with RO water...