Plantex 21-7-7 Acid Fertilizer | 25lb (80/PL)

Acidifying Soluble Feed for High-pH Water - 25lb

High-bicarbonate irrigation water can push media pH above the crop's preferred range. Plantex 21-7-7 Acid is a water-soluble fertilizer with high acidifying potential for acid-loving crops and pH-management programs.

The 25lb bag fits professional programs that monitor pH closely and need an acidifying feed. Use it carefully in continuous feeding because manufacturer guidance says media pH should not fall below the desired level.

Key Features & Benefits

• 21-7-7 acid analysis - supplies nitrogen, phosphate, and potash in an acidifying formula.
• High potential acidity - helps counter high-pH or bicarbonate irrigation water where appropriate.
• Acid-loving crop positioning - source material lists azaleas, rhododendrons, and many evergreens.
• pH monitoring requirement - keeps continuous-feed use tied to measured media response.

Who Should Use Plantex 21-7-7 Acid

This fertilizer fits growers managing greenhouse, nursery, or container nutrition with measured stock solutions and water testing. Choose it by analysis, nitrogen form, calcium or magnesium need, and media pH goals.

About Plant-Prod Plantex 21-7-7 Acid

Plant-Prod and Plantex water-soluble fertilizers are professional soluble nutrition products for growers. Manufacturer pages support the analyses, nutrient forms, package sizes, and crop-program positioning used here.

Frequently Asked Questions

What is Plantex 21-7-7 Acid used for?

Plantex 21-7-7 Acid is used as a water-soluble fertilizer in measured feeding programs. Select this formula when the analysis and nutrient form match the crop stage and water quality. Mix according to label and injector guidance.

Why does the NPK ratio matter?

The NPK ratio for Plantex 21-7-7 Acid shows the relative nitrogen, phosphate, and potash supplied by the formula. It helps growers compare this product against starter, balanced, cal-mag, or acidifying feeds. Use tissue tests, media tests, and crop response to refine the program.

How can this fit a feeding program?

Plantex 21-7-7 Acid can fit a constant-feed or rotation program when water quality and crop needs support that choice. Monitor EC and pH throughout the cycle. Adjust the rotation if the crop or media response begins drifting.

What should I check before ordering?

Confirm the product number, analysis, bag size, solubility, and nutrient form for Plantex 21-7-7 Acid. Those details affect tank mixing and media-pH management. They also help prevent grabbing the wrong soluble fertilizer.