I use it every day. If its to costly for you at least use it till you flip into bud. As for how much to use off hand i think it's 5mil per liter. And it comes in a bottle not a box. It's liquid not powder.

Quote Originally Posted by Racerx
Tranoble. I cannot find whether this was mentioned, but how long do you use Growth Excel? Into flowering? For how long into flowering? I am using it on some veg plants now but I have some about 6 weeks into flowering and wondering if they would benefit from it? Do you use the 2ml per litre they say on the box?