Well, here I am again. When I first started growing in the greenhouse several years ago I used a very cheap Hozon Siphon mixer to apply fertilizer with every watering. it worked well in the beginning but then stopped the fertilizer uptake completely. After that, I've been fertilizing by hand with a battery-powered sprayer. The larger my collection gets the harder is to do it by hand. First I was doing it twice a week, now I'm on a once-a-week schedule and still, it takes me 5 hours! I don't think I can handle this anymore. What do you folks use as fertilizer injectors? Ideally, I'm looking for something to connect to my outdoor faucet/spigot with an ability to turn it off when needed but I'm down to other suggestions as well. There are many options available and I don't wanna get something that is going to stop working in two months. Thanks!