API 3-Pack Root Tabs Freshwater Aquarium Plant Fertilizer - 10 Tablets Per Box

Boost roots, support growth

The API 3-Pack Root Tabs for Freshwater Aquariums deliver targeted root feeding directly into the substrate. Each box holds 0.4 ounces of fertilizer with 10 tablets, and the three-box set gives you flexibility for multiple tanks or restocking at a glance.

Root tab fertilizers place nutrients where plant roots can access them most. This blend includes iron for color and vitality, potassium for steady growth, and carbon to support overall plant metabolism. The nutrients are designed for gradual release, helping roots stay nourished without introducing large amounts into the water column.

What to expect in your tank

In practice, you’ll notice better-defined root zones and steadier growth as roots draw nourishment from the fortified substrate. Over time, you may see fuller foliage, more compact stems, and a balanced aquascape that complements rocks, wood, and foreground plants.

• Three boxes in the set provide flexibility for more than one tank or future restocking.
• Supports new plant establishment and ongoing vitality for established plants.

Usage ideas and tips

• Insert a tablet near the plant roots in the substrate, then cover with a thin layer of gravel.
• Apply during routine tank care or when you’re adding new specimens to support root uptake.

Simple, low-disruption dosing

Tabs sink with minimal effort and dissolve gradually as roots take up nutrients, reducing the need for frequent dosing in the water column and helping maintain water clarity.

Notes on variability

Results can vary with tank conditions, plant species, substrate type, and lighting. Consider API Root Tabs as a potential aid for root-focused feeding rather than a guaranteed outcome. Hobbyists often report healthier roots and steadier growth when roots receive direct nutrients in the root zone.