Chelated Micronutrient Mix vs Jack's Elementals MOST

Both are 1 lb water-soluble micronutrient blends for soilless and hydroponic growing, and both are repackaged or branded versions of established professional trace mixes. The Custom Hydro mix publishes a full guaranteed analysis with chelated iron, manganese, zinc and copper plus boron and molybdenum, which makes it easier to dose precisely in a custom nutrient program. Jack's MOST is sold as a chlorosis corrector and general supplement, with less detail on its guaranteed analysis. Buy the Custom Hydro mix if you formulate your own nutrients and want numbers to work from; buy Jack's MOST if you want a simple trace-element additive from a well-known fertilizer brand.

• Choose the Custom Hydro chelated mix if you run a custom or soilless nutrient program and need a published guaranteed analysis to calculate doses.
• Choose Jack's MOST if you want a branded soluble trace blend to correct chlorosis or top up an existing fertilizer program.