Whether you're mixing nutes for soil or hydro, no concentrates should be added together, so that instruction would apply to the GrowGenius as well. Looks to be a UK product so the legal rules might be different over there.
All nutes should be added to the water, whether that's in a reservoir or just the bucket you use to mix your nutes.
Personally I'm using DutchPro MSA at the moment. What does the GrowGenius set you back and how much do you add per liter/gallon? Do you have a target ppm at different growth stages?
All nutes should be added to the water, whether that's in a reservoir or just the bucket you use to mix your nutes.
Personally I'm using DutchPro MSA at the moment. What does the GrowGenius set you back and how much do you add per liter/gallon? Do you have a target ppm at different growth stages?