This thread keeps being resurrected. I assume that these guys have customers of some sort or another since they are still in business and I further assume that you are similar to the typical customer. Which is to say: you are using this injector in in-ground soil with a dry granular fertilizer similar to miracle gro. Ok, fine. You set it up and it appears to be working for you. But have you checked? Do you have a high quality EC meter with which you can monitor the concentration of the fertilizer that is being applied to your plants? I have one and I've checked (something they say on the website we could do but they hope that we'll "trust them"). The unit does not function as advertised even using the typical dry granular fertilizer. And yet you are still happy with it. Why? Because you see plants that are in your view doing fine and you see the fertilizer being used eventually. The fact that there is unevenness in application is not apparent to you from the plant (because you don't have consistent applications to compare it to) nor from testing of the output from the unit. But it *is* to me and it *should* be to you. The fact that you're almost certainly using mineral soil will mitigate some of the downsides of the unit - but you'd still be much better off with a steady application of a known quantity of fertilizer. Plant vigor would increase and you would have better control over the timing of concentration at certain times of the year. Anyone who will be happy with the fact that this unit will take fertilizer and in some way or another put it on your plants at some dosage or another will be happy with the unit! *That is not what they say it will do.* To answer some of your questions: No, they did not offer me a refund. For that I would have had to send it back to the company from which I purchased it - at my expense. The acid has nothing to do with anything. I also tested this unit with straight liquid fertilizer (with which they claim the unit will function as advertised - it doesn't) - and I had the same result. I was attempting to use it with acids at first, but when that didn't work I did further testing and found the unit doesn't function as advertised in *any* scenario that I tested. Here's the thing: if this unit does not apply fertilizer in a consistent concentration (and it emphatically does *not* do that) - then what is the POINT of the unit? Anyone who wants fluctuating concentrations of fertilizer should just be applying a dry granular product directly to the soil. And - most importantly - using the correct dry products directly in the soil one could almost certainly achieve more even concentration of available fertilizer than with this unit! Get yourself some sulfur coated urea or polymer coated urea products (or equivalent) and your plants would be better off, you will likely have saved money on the fertilizer itself, and you will not have had to purchase this sham of a product. Or if you want more control then spring for a quality fertilizer injector that does the job a fertilizer injector is supposed to do: provide consistent concentration of fertilizer for maximum plant vigor and control. There are quite a few companies which make products that work. Some are even in the same price range as this piece of junk (venturi injectors) though they still have the downsides discussed in earlier posts.

Thisisme- Yes it does go from hose connection to hose connection. I bought one about 12 years ago and about three years ago I hit it with a mower and I hunted for a new one and they weren't making them. Last spring, I saw them again and I bought two. I use one and keep the other in storage. I use them with my drip lines in my high tunnels. I run the hose to my filter and pressure regulator, then connect it to the pressure regulator and backflow regulator then connect this whole think to the header line. It looks like a kid got loose in the plumbing department! Even better when I attach it to a timer, just to get another device in there. I did the math to calculate the fertilizer application, but most of the time it is an educated guess and what has worked before. Go out and find on on Saturday. Jay

If you want to till without moving the tape, bury the lines deep enough that you won't hit them. The underground drip I have seen runs on about 8 psi, so the pressure is pretty low, yet it doesn't have problems. The other thing I've noticed with underground drip is that it can be difficult to get the water to the surface to germinate shallow seeds. You would want to plant directly over the buried lines, and run the water quite a while to get the water soaked up to the surface to germinate seeds if you don't have natural rainfall to get the job done. Else, on a garden use a sprinkler to get the surface wet and the seeds up. Also with underground drip, you would water daily to replace the water that is consumed/lost, keeping the soil at the right moisture all the time rather than saturating the soil, then letting it dry out until the soil gets dry and the plants slow down. Having a timer set to run the water for half an hour or so daily--depending on plant water consumption--would be an easy way to keep the soil moist.

Sounds like a great trip. I think you should be just fine with the setup described for irrigation. I would have your house sitter check the timer once per week to ensure there was not a battery failure. It may be overkill but it's for your own piece of mind while enjoying some time away to place a fresh set of replacement batteries right next to the timer and instructions on how to reset or manually trigger the timer.