white shark ocean 30w uv-c light with 17ft cable for 200-2000 gallon aquariums, ponds & pools - professional uv water clarifier for koi ponds, fish tanks, spas & cold plunge 30w for 2000 gallon is up for auction in Patio, Lawn & Garden. This item is in As Is condition. This auction has ended — similar items appear in live auctions regularly.