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Aqua One PL-18 Lighting Tubes

We stock the complete range of original Aqua One branded PL-18W Lighting Tubes for all Aqua One aquarium setups. Can't find what you're looking for? Simply give us a call and we will locate the correct item for you. We are the leading UK retailer of consumables for the full range of Aqua One products.

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PL18W Aqua One Sunlight / Tropical Mix 14K / 8K Tube ** 4 Pin Fitting **

PL18W Aqua One Sunlight / Tropical Mix 14K / 8K Tube ** 4 Pin Fitting **£19.99   £17.49


Original Aqua One high output replacement Sunlight / Tropical mix fluorescent lighting tube.

PL18W Aqua One Tropical (14K) fluorescent Tube ** 4 Pin Fitting **

PL18W Aqua One Tropical (14K) fluorescent Tube ** 4 Pin Fitting **£17.99   £17.49


Original Aqua One high output replacement Tropical fluorescent lighting tube.

PL18W Aqua One Sunlight / Marine Blue Mix 7.1K / 12K Tube ** 4 Pin Fitting **

PL18W Aqua One Sunlight / Marine Blue Mix 7.1K / 12K Tube ** 4 Pin Fitting **£21.99   £17.49


Original Aqua One high output replacement Sunlight / Marine Blue mix fluorescent lighting tube.

Aqua One Clear Lighting Cover for AquaStyle 620

Aqua One Clear Lighting Cover for AquaStyle 620£21.99   £19.49


The Clear Cover is the transparent plastic section which shields the lighting tubes in the canopy from water splashes and spray etc. These frequently become scratched and scuffed over time reducing the amount of light which penetrates the water’s surface. You will be amazed how much difference a new one can make.


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Changing your Aqua One PL-18w Lighting Tubes

Aqua One's high output, energy saving PL-18 watt lighting tubes provide excellent lighting in all aquarium models that use this type of lighting tube. The PL-18 tubes are usually situated behind a clear acrylic cover that will be held in place by wither clips or tiny screws. This is called a Clear Lighting Cover and will need to be removed to allow access to the bulbs.

The tubes themselves have four pins and once the lighting unit has been unplugged from the electriciy supply and the clear cover removed, they can be gently wiggled out of the socket by holding the base of the tube.


By nature, the output of fluorescent lighting starts to diminish the moment the lighting tube is first illuminated and this process continues throughout the working life of the tube. This process will continue gradually and eventually, a point will be reached whereby the output is considerably lower than that of a new tube and a replacement tube should be sought. Typically with a PL-18w fluorescent tube, we'd recommend changing every 6-12 months to maintain good lighting levels in your aquarium, particularly so if planted.

Clear Acrylic Lighting Cover

When changing your PL-18 Lighting Tubes it's a good idea to check the condition of the Clear Lighting Cover as they can become opaque over time. Customer's are often surprised how much brighter there aquarium lighting becomes once a brand new replacement Clear Cover has been fitted.

Guide to PL High Output Lighting

Check out our video below which shows the different types of PL energy saving lighting from Aqua One. It's important to point out that you will need to teplace your PL aquarium lighting with the same wattage tubes that it currently uses. So for example, if you have PL-18w lighting in your AquaStyle 620, AquaStyle 620T or AquaMode 900, you will need to choose your replacement tubes from our range of PL-18w and another wattage cannot be used.

Fortunately, there are several varieties of PL-18 Lighting Tubes available, so that you can acheive the exact look and feel that you require. We also now have a range of PL-18w Multipacks, including, Sunlight, Tropical and Marine Blue variants, plus a Sunlight / Tropical mix and Sunlight / Blue Twinpacks.

As ever, if you need any help or advice regarding your aquarium lighting requirements, please don't hesitate to contact us.

* Need other lighting spares or accessories for Aqua One? See all Aqua One Lighting

Aquarium Maintenance & Cleaning

Whether it's a scraper, a scrubbing pad, aquarium tongs, water treatments or conditioner that you need for your setup, you can be sure that Aqua One have you covered, with a full array of tools, liquids and potions to help keep your aquarium in tip top condition.

Aquarium Test Kits

Aquarium Test Kits

Find the ideal Aqua One Test Kit for your aquarium from our complete range, including pH for both Freshwater and Marine, kH, Nitrite, Nitrate, ammonia and more. Easy to use with at least 60 tests per kit.

Cleaners & Scrapers

Cleaners & Scrapers

Choose from a wide range of genuine Aqua One cleaning products, designed to make life easier and keep your aquarium looking great. Products include scrapers, gravel cleaners, tweezers and more.

Water Conditioner

Water Conditioner

Keep your aquarium water in tip top condition with a range of Water Conditioners from Aqua One and Tetra, both leaders in this field. Top sellers include Health Plus, AquaSafe and Easy Balance.

Water Treatments

Water Treatments

Here's everything you need to help maintain top water quality. From pH adjusters to biological treatments, ammonia remover and water clarifier, we're sure to have a water treatment to suit your particular application.

Ornaments & Decor

Silk Plants

Silk Plants

Exceptionally soft and beautiful, Aqua One's range of exquisite silk plants provide a great alternative to a live planted aquarium, gently swaying in the current. We highly recommend.

Vibrance & Plastic Plants

Vibrance & Plastic Plants

Choose new Plastic Plants from Aqua One's range of durable, great looking aquarium range, including the new Vibrance Series which bring colour and realism to any aquarium.

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