Available models:

10 W. for aquariums up to 500 L. Equivalent to a conventional 20 W UV. Dimensions: 300 mm x 100 mm x 140 mm.
Recommended for:

• Coral tank: (1-2 times of complete filtration per hour): 250 to 500 liters.
• Fish tank – (2-4 times of complete filtration per hour): 125 to 250 liters

29 W for aquariums up to 1,000 L. Equivalent to a conventional 60 W UV light. Dimensions: 600 mm x 100 mm x 140 mm.
Recommended for:

• Coral tank: (1-2 times of complete filtration per hour): 500 to 1000 liters.
• Fish tank – (2-4 times of complete filtration per hour): 250 to 500 liters

39 W. for aquariums up to 2,000 L. Equivalent to a conventional 80W UV. Dimensions: 920 mm x 100 mm x 140 mm.
Recommended for:

• Coral tank: (1-2 times of complete filtration per hour): 1000 to 2000 liters.
• Fish tank – (2-4 times of complete filtration per hour): 500 to 1000 liters

80 W. for aquariums up to 3,600 L. Equivalent to a conventional 160W UV.

What do we mean by "conventional"? Because of the loss of transmission.

Transmission loss:

Many people know that quartz is 96-98% transparent to UV-C rays, and that ordinary glass reduces UV transmission by approximately 50%. This is why DELTEC sterilizers have a quartz separation sleeve between the water and the bulb. What many people don't know is that conventional UV sterilizers produce UV radiation in a conventional glass tube, so half of the intensity is lost before it even leaves the tube.

DD Professional UV sterilizers feature a pure quartz bulb and quartz sleeve, utilizing 98% of the UV-C produced. In fact, DD Professional models produce approximately twice as much UV-C per watt as a conventional unit with a glass bulb. This makes the units much more compact and easier to install in many aquarium cabinets.

Characteristics:

• High-intensity, extra-flat quartz bulb with ceramic cap for good thermal insulation.
• 9000 hour lamp life for continuous use.
• Electronic ballast for flicker-free operation, doubling the bulb's lifespan.
• The pure quartz sleeve prevents thermal shock and keeps the lamp at the correct temperature for maximum UV-C output regardless of water temperature.
• The UV-resistant reinforced plastic body prevents degradation over time.
• Single-ended design and waterproof insulation according to CE IP67.
• LED indicator for lamp and ballast function.
• Allows partial immersion of the body in a sink, thus reducing the space required for installation.
• Viton gasket for long-term UV-resistant sealing.
• They can be easily connected together to form banks of UV units with standard plumbing.