Doc,
I can defiantly get more. What I did was put down a 10x10 tarp. Dumped the promix hp on it and broke up all the clumps. I spread the promix out on the tarp so it was a uniform 3 inches deep. I broke up the clumps in the EWC and sprinkled it by hand over the promix then did the same with the amendments from your kit. I folded, kneaded, flipped, flopped, made a pile, spread it out, re-flop, re-flip, ect.. prob. about 30 minutes worth. If high brix agrees with me I am gonna hit harbor freight for a cement mixer for the next batch. Once I felt it was well mixed I used a gallon pot to scoop it into my two 32 gallon trash cans. I filled them equally about 1/3 of the way. I added some r/o water and mixed then filled 2/3 and added r/o and mixed, ect.. Now I have a pair of 32 gallon trash cans 3/4 or so full of moist amended promix hp goodness. Each can has 2.5 gallons of water mixed into it. I put the lids on loose and put em in my veg room. I try to keep the temp at 68 but with the weather this time of year it fluctuates between 62-72. Oh boy!
I figure I can go out and get another 15lbs of EWC tomorrow and split it between the two cans and just hand mix it in the cans as best I can. I am able to reach thru the soil to the bottom so I think I get the new EWC mixed pretty good if I take my time and smoke a bowl before hand