The Marine Metal Products Cool Bubbles is a bucket aerator with a 3.5 gallon capacity. This aerator features a multi-purpose lid that has a large opening for easy bait net access, cutting surface, and mounting tabs for tools and tackle. The Cool Bubbles maintains constant water temperature with proper aeration which is great for cold weather fishing. FeaturesMaintains constant water temperature with proper aerationBubbles B-3 model pump runs up to +/- 85 hours with 2 alkaline D batteries, but also runs on 1 batteryImpact resistant case with neoprene seals and waterproof switchPumps 1.0 STL/minHard shell bucket with .75" insulating foam linerSpecial weighted air stones provide greater dissolved oxygenMulti-purpose lid has large opening for easy bait net access, cutting surface, and mounting tabs for tools and tackleIdeal for crappie and ice fishingDesigned for fresh and saltwater use3.5 gallon capacity