The Tunze DOC Skimmer 9430 is a high-performance internal protein skimmer engineered for superior waste removal in saltwater aquariums with limited space. Its compact design houses a powerful Tunze Hydrofoamer needle wheel pump that generates a fine mix of air and water bubbles, creating a stable foam to efficiently extract organic pollutants. Tunze's signature engineering delivers practical power for both commercial display systems and standard home aquariums, ensuring cleaner, clearer water for a thriving marine environment.

This skimmer is built for real-world reef systems, featuring a patented three-stage Anti-Overfoaming System that dynamically reacts to changes in water chemistry to prevent messy overflows. It is suitable for saltwater tanks up to 800 gallons for fish-only systems or 240 gallons for heavily stocked coral tanks. Key specifications include an adjustable water flow rate up to 660 GPH, an adjustable air flow rate up to 476 GPH, and a low energy consumption of just 32 watts. The skimmer requires an immersion depth between 3.9 and 7.8 inches and features a half-gallon collection cup that needs at least 2.8 inches of headroom for removal.

The Tunze DOC Skimmer 9430 is an ideal choice for serious aquarists who demand reliable and efficient filtration without constant manual adjustments. Its compact footprint makes it perfect for installation in aquarium cabinets or sumps where space is a premium. The intelligent Anti-Overfoaming System provides peace of mind, making it a set-and-forget solution for hobbyists with heavily stocked SPS coral tanks or large fish-only displays who need consistent performance that adapts to the dynamic conditions of a mature reef aquarium.