... ,perfect heat sink5.Widely used for Sea water aquarium, reef, frest water compatible6. Different ratio optional, no UV, ... coloru by Reef, fish etc. Fantastic Dream feetctiveness. Fresh water adpots blue, red led to supply the spectrum ... We suggest White & Blue, 1:1 for seawate, Fresh water adpots blue, red led to supply the spectrum requrired ... when working.Non waterproof, Do not drip the water in.