if he is using a gallon of water I would imagine 1 part piss is a gallon, been saving it up! 1 gallon of piss 1 gallon of water or he thinks a gallon is somehow measured in parts maybe 10 parts maybe 20 who knows all depends how you want to slice it could be 2 parts and yea you want to use urine and manure from animals that don't eat meat.
supprised he not jerkin it in to a gallon of water and using your own semen, me I like to shove my finger deep into my ass then scrape out whatevr gets stuck inder my singernail thn smeer that on a few leaves, makes some killer poop bud