GH isn't good for your ladies at full strength.Forget 1/4 strength go full or go home!
Since coco is hydroponic it requires a careful monitoring according to the needs of your ladies.
Soil grows you can go full strength but I still wouldn't.
Not this particular synthetic nutrient.
You can't eat a prime rib roast all at once. At least I can't.
The undigested nutrients will build in the coco in the form of salts.
Eventually locking out the roots ability to function properly.
Even at 1/4 strength GH can still maintain a lady.
Once you learn to read their needs you will see the steady improvement of a crop.
Happy growing.
Bill