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Self-leveling in most cases for convenient installation
Worth knowing: The product can be used only in the aquarium
a precision control gate valve and a hybrid conical body which helps to naturally stabilise and concentrate the organic rich foam as it rises
not simply a mixture of freshwater algae or ground up vegetables
Fluval SK400 Surface Skimmer Marinesalt Self-leveling in most cases forThe SK400 Surface Skimmer removes unwanted water surface film to help improve oxygenation and light penetration for a cleaner and healthier aquarium. Over time, surface films can develop from oils on your skin, household dust, cooking smoke, fat content within fish food and more. These films are not only visually unsightly, but also reduce dissolved oxygen (required by fish to breathe) and decrease light levels (needed by live plants to grow).