Murphy’s Hydro 1

The text was being displayed wrong -- 100 dollars or less for all 3 parts that'll give 4,666 gallons and about 6lbs of calcium nitrate leftover. I;ve seen it as low as 70 $ and that would be less than 3 pennies per gallon. Epsom salt 8lb bag from walmart - 5lbs is cheap. Part A 5-12-26 - 35 - 50 dollars 25lb calnitrate of any brand is about 25 to 35 dollars. Epsom 8lb bag at walmart - 5 dollars -- hard to call Epsom salt (magnesium sulfate) a 3rd part.. just adding ~1gram a gallon. depending on your tap water, my not need it at all. no additional supplements needed.

JR Peters - Jack's nutrient.. 3-parts, easy to adjust ratios for picky plants. Fully soluble, of course.. and pH-buffered like a mothaf%#$ka you won't need any pH adjustment unless your tap is wicked alkaline or wicked acidic... All of that and it's less than :text.04/gallon mixed... 4 pennies per gallon! Buy in bulk for a couple - 25lbs + foodgrade epsom salt from walmart.. ~0 (or less if on sale, calcium nitrate of ANY brand ~). I am 2 years in and may have Jacks 5-12-26 half way finished... ~/year or less in nutrients for my small garden and that's being conservative.

I second green planet as the first option or advanced nutrients sensi A/B. Decent product but crap company.