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BuildASoil BIG 6 is a dry organic micronutrient and humic acid amendment for living soil. It supplies boron, cobalt, copper, manganese, molybdenum and zinc, chelated with Faust Ful-Humix humic acid, and is formulated to raise manganese and cut iron compared with TM-7. It comes as a 100-gram bag and is applied as a dry soil amendment or as a foliar feed. The best new price is $6.00 at BuildASoil Wholesale as of November 6, 2026, with 3 stores listing it new.
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Lowest price we've seen: $19.80 on Nov 7 at Ecogarden Supply. Tracked across 3 stores since Nov 7.
Rated 5 out of 5 across 467 ratings, buyers treat it as a reliable micronutrient fix for living soil. Most mention the small bag lasting a long time and easy mixing.
BuildASoil BIG 6 Micronutrients + Humic Acid
We have done thousands of soil tests and over the years and we've noticed that our particular soils are usually very high in Iron but very low in manganese and 5 other Micro-nutrients like Boron, Cobalt, Copper, Molybdenum and Zinc!
Once you regain balance in your Iron to Manganese relationship and bypass the limiting factors of the others, you are in a position to drastically increase yield and disease resistance.
This is going to be a flagship product here at BuildASoil and we are very happy that Dr. Faust at Faust Bio-Ag was willing to custom formulate this product for us.
If you have been using TM-7 this is a great time to drop the Iron and ramp up the Manganese by using our newest product.... the BuildASoil BIG 6 MicroNutrients!!
These 6 Micronutrients are balanced and chelated through Faust Ful-Humix Humic Acid to make sure that we can use safe amounts and they will only help the plants. If you have questions please feel free to email us, Support@BuildASoil.com
Useful Info
BuildASoil BIG 6 Micronutrients + Humic Acid from BuildASoil on Vimeo.
Guaranteed Analysis:
Sulfur(S)........................2%
Copper (Cu)............0.31%
Boron (B).................0.37%
Cobalt (Co).............0.05%
Manganese (Mn)......2.4%
Molybdenum (M0)..0.1%
Zinc................................0.7%
Non-plant food ingredients: Humic 40% & Fulvic 10.5%
Derived from: Boron, cobalt sulfate, copper sulfate, ferrous sulfate, manganese sulfate, sodium molybdenate, zinc sulfate and chelated with humic and fulvic acids derived from fresh water cretaceous humate deposits.
How To Use
Seed activation: For vegetable seeds soak 72 hours at 1/8 tsp per gal. For other, soak for 24 hours at same ratio.
Soil and Container plants: 1/4 - 1/2 Tsp per gal of irrigation solution.
Hydroponic: 1/4 - 1/2 Tsp per gal of nutrient solution used in reservoir (use with every change. Top-offs can be chared with 1/4-1/2 normal rate).
Foliar Rates: 1/4 Tsp per gal every 7-10 days.
Field Use: 2-4 pounds per acre every 3-6 weeks. Pre-Plant Soil
