you're already hitting your 300's with 30 gallons at a time? are there even roots in most of the pot? I would have thought that your extra yummy soil mix would be enough for them for a while.
In 2000 gallons, 1 gallon of fish, kelp molasses, 1 gallon of BioTron BXI ( a soil starter ) , 1/2 gallon potassium silicate and 1 quart yucca is basically nothing...
oh shit... now you tell me. i have been trying to find kelp molasses on the internet for the last 10 minutes.
the oil from the fish hydrosylate cuts the bubbles from the yucca extract