I posted this elsewhere but, If you want to use just water to irrigate your crops, and get complete nutrition for your plants then try this.
50% Seasoil mixed with 50% Promix or Sunshine, and Doloprill Lime topdressing.
http://www.seasoil.com/about.html Use as a topdressing or mix in by 50% with any other (cheap) bulk soil.
http://www.naturesintent.com/dolopril Use as topdressing, apply 30ml of Doloprill per gallon of soil
The most unbelievable growth results I have ever seen have come from using Seasoil and Doloprill lime. It works on any garden; everybody gets the same super-boost in growth, indoors and outdoors and with any plant or crop when using Seasoil.
Seasoil has a huge, complete nutritional charge and its label clearly lists the amounts of all 13 essential minerals present. It also is full of PGPR - plant growth promoting rhizobacteria - as tested by a university in Canada.
The Doloprill adds a little more Calcium and Magnesium and adjusts pH every time you water. Plants grow like they are on steroids when Seasoil is around - super enhanced stem and leaf sizes, and roots grow like crazy! After 25 years as a horticulturist I just came across it in 2014, and nothing I've tried before has worked so well.
I attached a picture of the way roots come
up and out of the Seasoil when you use it as a top dressing. Has anyone ever seen that before?! It's simple with Seasoil, when roots get so excited about the Seasoil topdressing, the whole plant goes nuts too!