growgreenmi.com has a super sale on RAW NPK. you never use more than 1/8 of a teaspoon of their base nutrients. Usually it's 1/16. Because it's so strong. Here's proof. It's cheap. If you priced npk you know it's outrageous but not here. My advice buy extra amino and microbes. You'll go through those the fastest.
The 8oz NPK nitrogen potassium phosphorus are 20 or less for 8oz. And you never use more than 1/16-1/8 of a teaspoon. So it will last you a long time. And it grows awesome bud
Well it's dirt cheap for RAW prices yes. I try to keep in mind these are all readily available nutrients that can be purchased cheaper when obtained in their base forms. But, thanks for that post, looks like some of it is still going cheap.
so - so many nutrient companies - for me Humbolts County Own is by far the best I've used - have used many in my years of cultivating but humbolt is my go to. just got a sample kit again ($70.00 generally it's $140.00) many years ago they were selling it for $15.00 !!!!!!!! (yr 2000) the prices are a changing !!