What I found was an $18 "Hozon Siphon Mixer", and I found it in a local place: "Steuber's Distributing".
That doesn't come with a spray nozzle.
You might try putting in a measured amount of something , picking an intermediate setting, and then seeing how long it takes to suck the jar empty.
That won't work if it's like a Miracle-Gro sprayer I had once: it continuously dilutes whatever you spray with.
If the amount it delivers can't be determined, I would be very cautious about using it with any highly concentrated fertilizer. Better to mix a few gallons and water by hand with a wtaering can, or just using less-concentrated fertilizers.
Hopefully you can thin out the excess P in just a few years. Would it be practical to create a few new beds, then divide your current soil among them, and then top them all off with several cubic yards of new soil? [s]Or just truckloads of compost? [/u] (To dilute the excess P faster.)
Does anyone know of a very heavy feeder that takes up a lot of Phosphate?
Edited to add: Compost adds P! Manure adds even more P. Be careful about adding compost when you already have excess P.
