I've made my own when I worked at hydro stores. It's easy just use the suction cups on a pump mount a piece of pvc pipe snugly over the end where spray comes out a a 60 gallon per hour pump or higher and use a threader adapter to screw in a sprayer. Took me about 5 minutes including the holes in the bucket. But then again I have honed my craft of building most any system by killing 100's of different types of containers over the years. I've learned to build pretty much anything for whatever purpose I need.