Sorry man haven't been on for awhile. Working on a new project, going to try the UC pro ohhh yeah!!! Max ppm is 550 or so on 500 scale. We upgraded the airstones in the buckets and also doubled the stock return pump size.
Dan man I need to see a detailed grow report on the feeding because I couldn't dial in the cultured solutions nutrients (that's what you're using right?) Even though I've seen others have good success