Tomatoville® Gardening Forums - View Single Post - Masterblend 4-18-38 question for tomatoes in potting mix

dshreter · June 1, 2021

I'm also trying my best to use 4-18-38 in my garden. I'm trying to mix up a concentrated solution to go in an EZ Flo tank fertilizer injector to mix into the drip irrigation system. Despite adding the components in order and thoroughly mixing before each step, it seems to be coming out of solution when I add the CalNitrate.

Does anyone have experience making a 4-18-38 / Magnesium Sulfate / CalNitrate concentrated liquid and advice for this situation? How high a concentration were you able to mix where it would stay in solution?

June 1, 2021	#7
dshreter Tomatovillian™ Join Date: May 2019 Location: Seattle Posts: 58	I'm also trying my best to use 4-18-38 in my garden. I'm trying to mix up a concentrated solution to go in an EZ Flo tank fertilizer injector to mix into the drip irrigation system. Despite adding the components in order and thoroughly mixing before each step, it seems to be coming out of solution when I add the CalNitrate. Does anyone have experience making a 4-18-38 / Magnesium Sulfate / CalNitrate concentrated liquid and advice for this situation? How high a concentration were you able to mix where it would stay in solution?