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Pendant Lighting

Lamp Controllers

Related Products

Fluorescent Lamp Reflector
Double your light output with our reflector. It ensures stray light is redirected into the aquarium, maximising efficiency.


The Arcadia ULTRA SEAL controllers are the latest generation of our popular fluorescent lighting controllers.

They incorporate a number of improvements and are designed to comply with the latest European aquarium lighting standards.

  • Patented ULTRA SEAL® waterproof (IP67) lamp-holders
  • Supplied with universal mounting brackets for installation on aquarium hood or walls
  • Compatible with Arcadia reflector range
  • 5 Year Guarantee


T8 Single Lamp Controller
Code Watt Length Diameter Lead Length
ACU08 6/8W 12″/300mm T5-16mm 2.0m/2.4m
ACU15 14W
12″/300mm 18″/450mm T8-26mm 2.4m/2.48m
ACU18 18W/20W 24″/600mm T8-26mm 2.4m/3.6m
ACU30 25W
30″/750mm 36″/900mm T8-26mm 2.4m/3.6m
ACU36 38W
42″/1050mm 48″/1200mm T8-26mm 2.4m/3.6m
ACU58 58W 60″/1500mm T8-26mm 2.4m/3.6m

T8 Double Lamp Controller
Code Watt Length Diameter Lead Length
ACD15 14W
15″/375mm 18″/450mm T8-26mm 2.4m/2.48m

Product Safety

Lamps can be fragile pieces of equipment. Please follow the following steps to ensure the safe fitting and use of fluorescent lamps.

At either end of a fluorescent lamp you will see two brass coloured connection pins. These are the electrodes that take energy from the controller to start and run the lamp. These are quite fragile by nature. It is imperative that both pins are safely located into the pin sockets inside the lamp holder before the lamp is pressed into place. Failure to line the pins up correctly will cause the pins to bend and snap and break through the lamp cap rendering the lamp unusable.
The Ultra-seal lamp ring must be unscrewed from the lamp holder and placed over the lamp prior to fitting and only re-seated onto the lamp holder when you are sure that the lamp pins are seated correctly. High Output T5 lamp leads must be fully unwound also or you may notice lamp flickering or beaks in illumination. You can also use a very small amount of a substance like Vaseline to lubricate the lamp ring and so stop it fusing to the lamp after long periods of heat. After cooling lamps can be wiped clean with a damp cloth once every two weeks or so to remove any dust build up from the lamp, this in turn will help to maintain the lamps full output. The all important reflector should also be wiped clean at the same time.

Lamp Reminder Service

Is your lamp still emitting the correct amount of UV!

The amount of light emitted from a lamp decreases with the age of the lamp, particularly in lamps which emit ultraviolet radiation, so it is important to remember to change you lamps at the end of their recommended service life.