API Aquatic Plant Food Tablets 25-Count Pouch — Slow-Release Pond Fertilizer for Potted Plants, Iron-Rich

API PONDCARE Aquatic Plant Food Tablets are slow-release fertilizer tablets formulated with key nutrients and iron to feed potted and container pond plants for vigorous green growth and season-long blooms.

If you keep plants in containers or self-contained water gardens, these compact tablets make targeted feeding simple. Each tablet is placed directly into the potting media of aquatic plants to supply nitrogen, phosphorus, potassium and micronutrients like iron, manganese and boron that support foliage, root development and flower formation. The small pouch contains 25 measured tablets, letting you dose individual pots without dissolving fertilizer into the pond water.

How do these tablets improve pond plant health?

The tablets deliver concentrated nutrients right to the plant roots, preventing nutrient dilution in the pond and ensuring steady uptake over time. They provide both macronutrients for growth and trace elements for pigmentation and flowering.

• Slow-release formula feeds over weeks to reduce frequent dosing.
• Iron promotes deeper green foliage and prevents chlorosis.
• Boron and micronutrients support bud and flower development.
• Direct placement in soil minimizes fertilizer loss to surrounding water.

When should I start and stop using these plant food tablets?

Begin treatment in spring once average water or air temperatures reach about 50°F, and continue through the growing season. Stop applications in late fall as temperatures fall below roughly 60°F or when plants enter dormancy to avoid stressing roots.

• Start: spring, around 50°F.
• Maintain: feed throughout active growth and blooming periods.
• Stop: cease use in late fall as plants slow down for winter.
• Storage: keep pouch sealed and dry between seasons.

Can I use these tablets in ponds with fish?

Yes—API PONDCARE tablets are made for artificial, self-contained ponds that contain both aquatic plants and fish. They are intended for contained water features without flowing outlets to avoid nutrient runoff into natural waterways.

• Safe for sealed ornamental ponds with fish species like koi and goldfish.
• Not recommended for lakes, rivers, streams, or ponds with outflow.
• Place tablets into the soil of potted plants, not free-floating in water.
• Follow dosing and handling directions to protect water quality.

How many tablets and what application pattern should I use per pot?

Application varies by pot size and plant type; each tablet is a single, measured dose intended for individual pots. For heavier-feeding plants or larger containers you may use multiple tablets spaced through the season, while small pots typically need one tablet per feeding cycle.

• One pouch contains 25 tablets for multiple pots or repeat feedings.
• Insert tablets into the potting media near roots, not on surface.
• Adjust frequency based on plant vigor and seasonal growth.
• Observe plants and reduce feeding as growth slows in cooler months.

Who is this for: API PONDCARE Aquatic Plant Food Tablets are designed for water-garden enthusiasts and landscapers who maintain potted or containerized aquatic plants in self-contained ponds and decorative water features. They suit hobbyists keeping koi, goldfish, or mixed aquatic displays who want a straightforward, targeted fertilizer that promotes greener leaves and consistent blooms without dissolving fertilizer into the entire pond. Choose these tablets if you prefer measured dosing, seasonal application control, and nutrient delivery directly to plant root zones in contained aquatic setups.

• Features: 3.8 oz pouch with 25 tablets; slow-release nutrients including N, P, K, iron, manganese, zinc, boron, copper.
• Use case: potted aquatic plants in artificial, self-contained ponds with fish; not for flowing water bodies.
• Brand assurance: API has over five decades of pond care product development and research.