I would start at 1/4 recommended strength and see how your plants respond. If they green up and perk up, up it to 1/2 strength. Watch for crispy tips on leaves. (Over fert) I wouldn't use full strength to begin with. That's my thought. Some thoughts are belligerent.
it's not a cannabis nute in a media calling specifically for a cannabis nute .... he can give it a shot, but he won't be any where near balanced nute wise.