I did a bit of reading on the Dr schultz food and from what I read It's not the best buy any means. I still have a bottle siting on my grow room shelf. I guess if you have nothing else to use then go for it, but make it like 1/4 the dose every second watering and go from there. I use the flora nutrient 3 bottle stuff seems to work great. Still kinda new to all this so I could be wrong but just trying to help out. Good luck, happy growing.