The cylindrical is a unique and cutting edge approach to aquarium lighting. This lamp utilizes Dense Matrix LED technology to combine different light wavelengths to provide one uniform color. This little light measures 3.8 inches tall by 4 inches in diameter. Users can also select the desired spectrum of light from thousands of options and the intensity of the light with two tunable knobs. Kessil A360 provides plenty of UV light, no matter the spectrum. Plus, the lights offer that beautiful sunlit shimmering effect. Kessil lamps come with a pair of input/output ports allowing them to be daisy chained and connected to an external controller. When not using an external controller, the first Kessil A360 in the daisy chained series acts as the master control.
Fluval Aquasky LED Aquarium Light, Adjustable from 24"-36" L.
This LED light has been specially designed for marine fish aquarium and especially reef tanks with live corals fit aquarium widths of 18-24 inches, 24-36 inches, 36-48 inches, and 48-60 inches.
Beamswork 36" EA FSPEC LED Freshwater Aquarium Light - YouTube
I read about how suitable LED is for aquariums, but I have not seen any article address the water depth issue. From what I have read, the only suitable light system to reach any aquarium with a water depth greater than 20″ is Metal Halide. However, I am inferring from what is being written about LED’s is they will reach any depth without any diminished effect. I have a 110 gallon freshwater aquarium that has a water depth of 36″. Is an LED system going to give my live plants the light they need to flourish?
Product - Finnex Stingray Aquarium LED Light, 36 Inches