The HOLMAN QuickMix Sray Gun is a great solution if you have many pots or a small to standard sizd lawn area to fertilise . Just add the mixture into the mixing pot , click on the hose and it will mix the quantity of fertiliser with the water as you sray . You my have used the clip on weeding spray in the past its the similiar idea .
There are 8 x Dilution levels and a one hand control flow to adjust the waterflow