Just wanted to give a suggestion for people who care about food-grade. This last time I only used azos bacteria per instructions for cloning. I use the same trays and domes and clean them out with seventh generation free and clear dish soap. I root in plugs. I use nothing. No gel. No hormone...
They work great for flavor and aroma. I used them with other organic nutrients (bio bizz & bountea) so I can't give you a 100% accurate response. You do NOT need to adjust the pH. There should be minimal smell to the nutes. If it wreaks then it has gone bad. If you are using co2 then feed...