Chihiros Series A plus LED lamps are specially created for densly planted, open fresh water aquariums. They have a very slim design and the evenly distributed LEDs illuminate every tank completely. The LED cover is made of aluminum alloy and finished with anodize surface treatment, which effectively reduces the heat generation problem of the high luminosity LED lamps and prevents the lamp from rust. Other than the Series A lamps, these lamps have nearly the double amount of LEDs built on, which amounts in a recognizable rise in the lumen per litre ratio. This makes these lamps ideal for deep and densly planted tanks.
Chihiros lamps are not designed to be used under a closed top. It should only be used over open tanks, even the combination with a cover disk is no problem. Under a closed top the LEDs would corrode, due to the water vapour.
Usage under a closed top is not allowed.