Brightwell Aquatics ChaetoGro — Refugium Fertilizer

ChaetoGro by Brightwell Aquatics is a precisely balanced liquid fertilizer designed specifically for growing chaetomorpha and macroalgae in refugiums. It provides 13 essential elements in a phosphate- and nitrate-free formula, making it ideal for ultra-low nutrient systems (ULNS) where you need maximum algae growth without adding nutrients back to the display tank.

Key Features

• Provides 13 essential elements for macroalgae health and vigor
• Phosphate and nitrate free — will not raise aquarium nutrient levels
• Designed for ULNS and low-nutrient systems
• Contains iron, cobalt, and molybdenum for optimal chaeto growth
• Safe for shrimp and invertebrates
• Supports long-term chaeto coloration and growth rate

Dosing

• Basic: 5 mL per 20 gal twice weekly for first two weeks, then adjust
• Advanced: 6 drops per 20 gal daily; adjust after one week based on algae appearance
• Maintain minimum 0.01 ppm phosphate and 3–5 ppm nitrate for best results

Available Sizes

• 250 mL | 500 mL | 2 L