A follow up on this thing.
If you can fertilize your trees without stopping, this is the thing for you. It definitely work, BUT... if you use any type of trigger valve, it will stop siphoning, and depending on how much you wait the line that feeds the fertilizer will drain back, which means you have to start the water and wait for the fertilizer to fill up on the hose.
That translates to wasted water, possible times where you will have a weaker concentration of fertilizer. Also, you need at least a 5/8" hose, no longer than 50'. Thankfully I have a short 5/8" 25' that I used to use on the pool in the old house. Also, it doesn't work with drip lines, which is what I really wanted to hook it up to, not a deal breaker, as I fertilize twice a week during the growing phase, so I can do that with a hose.
It also needs at least a 3 GPM nozzle, any less than 3 GPM will not draw liquids. They recommend the DRAMM 170, but the 480 series which is better for bonsai works as well.
So, I will keep this for my garden trees and brushes, but not for bonsai. I am looking at something like the item below so that I can adjust the flow. Probably just swapping the hose for a larger diameter will help bring the pressure down to acceptable, it flows 7.5 LPM, almost 2 GPM. I think this will be the ticket. I'm probably going to buy a big 10-gallon bucket from
USP to mix the fertilizer and use this to deliver it. If you use any type of plastic container for solutions, buckets, spray bottles, etc and you have not looked into USP, you need to. I have used them since I had my detailing company and they are by far the lowest price in the market without having to wait a month for delivery from China.