Boca Hydro Magnesium Sulfate Water-Soluble Fertilizer 16% Magnesium 32% Sulfur

Boca Hydro Magnesium Sulfate

High-Purity Magnesium & Sulfur Supplement for Vigorous Growth

Boca Hydro Magnesium Sulfate is a hydroponics-grade, fully water-soluble source of magnesium (Mg) and sulfur (S), essential for chlorophyll production, enzyme activation, nutrient absorption, and overall plant vigor. With 16% Mg (as MgO) and a potent 32% sulfur, this premium formulation is ideal for preventing and correcting deficiencies in all growing systems.

Perfect for use in hydroponics, soil gardening, foliar feeding, and fertigation systems, Boca Hydro Magnesium Sulfate dissolves quickly and cleanly for maximum plant availability.

100% Water Soluble
High Sulfur Content for Protein and Oil Formation
Promotes Lush Green Foliage and Strong Root Development
Safe and Effective for All Crops and Growing Systems

Corrects or prevents magnesium deficiency, stunted growth, small leaves and reduced yields in all fruits, vegetables and cannabis.

Like all secondary nutrients, plants do not need large amounts of magnesium to thrive, but an absence of the nutrient will cause stunted growth. Magnesium is a key component of chlorophyll. Without magnesium, the plant cannot produce chlorophyll, which will cause photosynthesis to suffer.

Magnesium also plays a role in the transfer and production of sugars, starches, fats, and oils within the plant. This means a lack of magnesium will cause starchy vegetables, buds that are not dense, reduced oil production or nuts to lose their shape and flavor.

Magnesium is highly mobile in the plant and deficiency symptoms first appear on the lower leaves. Symptoms are more severe on the lower leaves because magnesium is moved to the new growth. Deficiency symptoms consist of interveinal chlorosis (leaf veins stay green while the regions between them turn yellow). Older leaves lose their green color except in the veins. Interveinal chlorosis can lead to necrosis (death of tissue) of the affected areas.

On tomato leaves advanced magnesium deficiency leads to purpling of the affected areas. It may also lead to the defoliation of the lower leaves. Magnesium deficiency does not affect the fruit but severe deficiency can stress the plants leading to reduced yield and smaller fruits and buds.

Boca Hydro Magnesium Dosing PDF

1 gram of dry product contributes:
160 mg Mg (16%) = ~160 ppm Mg per gallon
320 mg S (32%) = ~320 ppm S per gallon

Stock Solution (Concentrate) Dissolve 2.2 lbs (1,000 grams) of Boca Hydro Magnesium Sulfate into 1 gallon of distilled water.

1 fl oz concentrate ≈ 29.6 grams Magnesium Sulfate. 
1 tsp (5 ml) of concentrate = ~0.8 grams Magnesium, ~1.6 grams Sulfur”

Foliar:
Maintenance: 1–2 grams per gallon (1–2 tsp concentrate)
Deficiency Repair: 3–5 grams per gallon (1–1.5 tbsp concentrate)
This provides 160–800 ppm Mg. A Surfactant can improve uptake

Pots and containers: 
Small Pots: 1–2 grams per gallon (1–2 tsp concentrate)
Medium Pots: 3–5 grams per gallon (1–1.5 tbsp concentrate)
Large Pots: 6–8 grams per gallon (2–2.5 tbsp concentrate)

Hydroponics:
Target ppm
25 ppm: 0.16 g (0.54 ml or 1/8 tsp concentrate)
50 ppm: 0.31 g (1.0 ml or 1/4 tsp concentrate)
75 ppm: 0.47 g (1.6 ml or 1/3 tsp concentrate)
100 ppm: 0.63 g (2.1 ml or 1/2 tsp concentrate)

Drench:
Deep feed for larger plants or correcting deficiencies.
Light Feeding: 10–15 grams per 5 gallons (1.5–2 tbsp concentrate)
Heavy Feeding: 20–25 grams per 5 gallons (3–4 tbsp concentrate)

Fertigation: 
25 ppm 156.25 grams (5.51 oz) per gallon
50 ppm 312.5 grams (11.02 oz) per gallon
75 ppm 468.75 grams (16.54 oz) per gallon
Inject at 1:100

Soil Application
1-2 tsp per square foot, water thoroughly.

Guaranteed Analysis   CAS No 10034-99-8
Magnesium Oxide ..........16% 
Magnesium (Mg) .............9.7%
Sulfate (SO3) .....................32%
Sulfur (S) .............................12.8%