Hello I think you are looking for something like a Solinure diluter distributor ,I use to use them in a market garden,they looked like a fire extinguisher with 4 pipe outlets coming off the top and an inlet pipe in the centre put solinure water soluble fertiliser in it connected a hose connected the feed tubes set the dilution rate turned the hose on and left it for 12 hours,diluted from 1/3oz to 16 oz per gallon per hour jezza