Features: 100% brand new and high quality Quiet， safe and reliable Completely submersible Easy installation maintenance and cleaning Low power consumption with high power output， energy efficient Effectively absorb oil and other pollutants to maintain water quality Scope: models suitable for fish tank length 25 - 40 cm (Single tier of 3w) models suitable for fish tank length 35 - 60 cm (Double layer of 5w) (Regardless of the square cylinder， round cylinder， ceramic cylinder)
