D-D 39w Replacement UV Bulb for UV Sterilizer Filter Socks Alka-Haul Reef provides bio-available supplementation

Alka-Haul Reef provides bio-available supplementation that mirrors the stability of natural reef systems

With a Eurobraced design (for 425 models and above) for added strength

ultra-clear viewing

Safe for both marine and freshwater aquariums (excluding phosphate-buffered freshwater)

testing phosphate every 4 days and adjusting dosage accordingly

D-D 39w Replacement UV Bulb for UV Sterilizer Filter Socks Alka-Haul Reef provides bio-available supplementationEnsure optimal performance of your D D 39w UV sterilizer with this high quality replacement UV bulb. Designed to help control green water and algae within your aquarium, this 39w bulb should be replaced every 6 months for continuous water clarity. It works efficiently with the D D UV sterilizer, promoting healthier water conditions and a clearer tank environment for your fish and plants. Key Features: Replacement UV bulb for D D 39w UV sterilizer