Jack's Classic Nutrients 15-0-0 Part B Water-Soluble Fertilizer for Calcium Uptake and Strong Leaf Growth in Continuous Liquid Feed Programs, 25Lbs

Much cheaper and better than it’s competitors

Easy to mix with water and use for drip irrigation systems

This is all you need. I've spent years buying boutique nutrients and this has done just as good for a base at a much lower price point. Works well with any additives, like silica, microbes or carbs. Other liquid nutrients you are paying for the weight. Mix this yourself and save.

In addition to hydroponic application, it’s also good for in ground and foliar spray.

Great fertilizer

Using this in the Jacks 3-2-1 system for medical cannabis. The ease of use and results are amazing. I won't be using anything else.

been using jacks nutrients for years and they have always produced quality flowers and veg. Much cheaper to by the big bag than the 2.2 lb bag. Actually saved over 200 dollars if you do the math. Definitely the way to go

It's been helpful product for our raised beds. Useful for tomato end rot. Our second order.