never used it, but found this:
I only use the fish shit to raise the N level quick it does not last that long imo.
The only part you will use is the N it's not a full NPK nutrient it's more of a supplement. Using the proper NPK ratio and the proper supplement at the proper cycle is whatgrowing quality is all about. Now if only everyone can agree on the term proper cycle time that is the trick. Many think there are only 2 cycles of growth vegetative and bloom. I say (and I am not alone by a long shot) that the plant changes its life cycle every 7-10 day's. The trick is how to intrepid those signs and triggers then know what to do so your plant can be all it can be, so to speak. But don't worry it's just me rambling and I am constantly reminded that it's just a weed and can grow just about anywhere. Don't over think it just smoke it and enjoy.