The OASE CrystalSkim 350 innovative aquarium surface skimmer quickly and effectively frees the aquarium surface of floating debris and substances. The skimmer eliminates any biofilm from the water’s surface. Removing biofilm is important for proper oxygen flow in the aquarium. CrystalSkim is also designed to catch even the finest plant debris that are almost impossible to remove with a net. CrystalSkim 350 is compact in size and has a powerful and quiet motor. The flow is adjustable, ensuring a crystal-clear water surface at just the right output. An integrated collection basket ensures the safety of the aquarium inhabitants. Small slots in the collection basket prevent livestock from being pulled in. The floating ring is designed to allow the CrystalSkim to still skim the waters surface even if the skimmer isnt level. In addition to skimming, the unit is designed with a bottom discharge that creates flow in what would be dead spots normally. Easily install the CrystalSkim 350 into fresh or marine water aquariums up to 92 gallons. The included mounting unit with suction cups secures the skimmer to your aquarium. Easily remove the skimmer from the mounting unit for maintenance. Designed using German engineering, this skimmer is protected with a 3 year warranty.