Humboldt County's Own Magnum - Magnesium/Sulfur Supplement with Vitamin B1 - 5 Gal

Magnesium Support for Flowering Crops - 5 Gal Container

Magnesium deficiency can quietly slow growth, and by the time leaves yellow, flower development may already be affected. Humboldt County's Own Magnum is a magnesium/sulfur supplement with vitamin B1 that gives plants a dedicated magnesium source for chlorophyll production. The B1 is included to help plants cope with the stress of demanding flowering regimens.

The 5 Gal container suits growers who feed regularly across several cycles or run larger indoor or commercial rooms. Hobbyists with a small setup may find it more than they need.

Key Features & Benefits

• Magnesium/sulfur formula — supplies magnesium, which sits at the center of the chlorophyll molecule, and sulfur.
• Vitamin B1 included — helps reduce stress during high-performance flowering.
• Magnesium-only correction — lets you address a magnesium shortfall without adding other nutrients.
• 5 Gal container — suits repeated feeding across multiple cycles.

Who Should Use Humboldt County's Own Magnum

Growers who run hydroponic systems, feed high-potassium flowering boosters, or grow varieties with high magnesium demand should consider it. It also suits anyone whose base nutrient program does not supply enough magnesium.

About Humboldt County's Own Magnum

Humboldt County's Own Magnum is a magnesium/sulfur supplement with vitamin B1, sold in a 5 Gal container. It is sold individually and ships at 50 lb, with a package measuring 11 x 10 x 13.5 in.

Frequently Asked Questions

Q: What does Magnum do?
A: It supplies magnesium and sulfur, with vitamin B1 added. Magnesium is a core part of chlorophyll, so plants need a steady supply to photosynthesize well.

Q: What are the signs of magnesium deficiency?
A: The main symptom is premature yellowing or fading between the leaf veins. Because this shows up after the plant has already been affected, many growers supplement before symptoms appear.

Q: Why can high-potassium flowering boosters cause deficiency?
A: Heavy potassium feeding can compete with magnesium uptake. Growers who use these boosters often watch magnesium closely.

Q: Is a calcium-magnesium product a substitute?
A: Not necessarily. Calcium and magnesium move through the plant by similar pathways, so extra calcium can interfere with magnesium uptake. A magnesium-only supplement avoids that issue.

Q: What size is the package?
A: The 5 Gal container is sold individually. Package dimensions are 11 x 10 x 13.5 in and shipping weight is 50 lb.