First I would advise you to not fertilize until codaledun leaves ( those first two little round ones ) have shriveled, as they provide for your plant in early stages of life and no fert is needed until they are gone. secondly I wouldn't risk using a fertilizer that lacks mixing instructions, but if you do, and it is made for dispensing from a hose feeder, why not just run the hose feeder into a bucket, and then use that. Seems best way to avoid overdose.