Clearseal aquarium hoods are injection-molded plastic hoods made in the UK by Clearseal, one of the oldest aquarium equipment manufacturers in Britain. They are designed to fit Clearseal's own tank range, which uses metric dimensions common in European aquaria, and they are widely available through UK aquatic retailers. If you are based in the US or shopping for a standard American-sized tank, these hoods will not fit most setups without modification.
This guide covers what Clearseal hoods actually include, how they fit, lighting options, common issues owners run into, and how they compare to other hood options available internationally. If you are shopping for a hood and want to know whether Clearseal is right for your tank, read on.
What the Clearseal Hood Includes
Clearseal hoods are sold in several configurations to match their tank width range. The standard range covers tanks from 24 inches (60cm) up to 48 inches (122cm) wide. Each hood comes as a two-piece unit: a main body and a hinged front flap that lifts for feeding without removing the entire hood.
Hood Materials and Build
The hoods are made from ABS plastic in a matt black finish. The plastic is thick enough to handle the heat from fluorescent tubes, though it does show wear over years of use, particularly around the hinge points. Some owners report hinge cracking after three to five years, especially on the larger 48-inch models where the plastic bears more stress. Clearseal sells replacement hinges separately.
The hood ships with pre-cut holes for cables and airline tubing. If you are running a canister filter, the cable and hose routing holes are sized for standard fittings. For additional equipment like heater cables or CO2 lines, the plastic cuts easily with a hobby knife or hole saw.
Lighting Provisions
Clearseal hoods are designed for T8 fluorescent tubes and come with a basic single-tube fitting on most standard models. The twin-tube versions accommodate two T8 tubes side by side, which is more useful for planted tanks that need higher light output. Ballast and starter are not always included in base configurations, so check what each product listing includes before ordering.
Retrofitting LED strips into Clearseal hoods is common. The interior width accommodates standard LED strip bars from Arcadia and Interpet. Several Clearseal users on UK hobbyist forums have documented LED retrofits that significantly improve light quality while reducing heat inside the hood.
Sizing and Compatibility
Clearseal sells hoods in sizes that match their own tank dimensions: 60cm, 75cm, 90cm, 105cm, 120cm, and larger commercial sizes. These are not identical to common US aquarium widths, which are typically sold in 24-inch, 36-inch, 48-inch, and 60-inch increments.
Metric vs Imperial Sizing
A 90cm Clearseal hood is 35.4 inches wide, compared to the standard 36-inch US aquarium. That 0.6-inch difference usually means the hood will not sit flush on a standard US tank rim. If you are in the US and considering a Clearseal hood, measure your tank rim width precisely and contact a UK supplier for exact hood dimensions before ordering.
If you want a hood for a standard US aquarium, best aquarium equipment covers several hood and canopy options designed for US tank dimensions from brands like Aqueon and Marineland.
Custom Fitting
Some hobbyists trim Clearseal hood edges with a table saw to fit non-standard tanks. The ABS plastic cuts cleanly. However, trimming affects the hood's structural rigidity on longer pieces, and the cut edge will look raw unless finished. This is more effort than most buyers want.
Common Issues with Clearseal Hoods
No hood is perfect, and Clearseal has a few consistent weaknesses that owners report across forum posts and reviews.
Hinge Wear and Cracking
The front-flap hinge is the most commonly mentioned problem. Clearseal uses a simple pivot hinge design that works well for the first few years but becomes brittle with age and UV exposure from the lamp. On 48-inch and larger hoods, the hinge bears enough stress from the weight of the flap that cracking is common around year four or five. Replacement hinge kits are available directly from Clearseal and through UK aquatic suppliers.
If you buy a secondhand Clearseal hood, inspect the hinge carefully before committing. A cracked hinge on a used hood at a good price may still be a reasonable purchase if replacements are available and cheap, but a hood with a broken hinge that cannot be sourced is a door stop.
Condensation and Electrical Safety
All plastic hoods accumulate condensation on the interior, and Clearseal's are no exception. This is more of an issue with fluorescent tube lighting, which generates more heat and temperature differential. Keep the wiring connections clear of drip points. Clearseal's cable entry holes route cables along the back of the hood where dripping is less likely, but check the interior routinely if you are running the original T8 fitting.
LED conversions reduce this problem significantly because LEDs generate less heat, meaning less evaporation and less condensation cycling inside the hood.
Light Output on Single-Tube Models
The single T8 tube in standard Clearseal hoods produces approximately 15-20 lumens per liter in a typical 60-80 liter tank. This is adequate for low-light plants like Java fern, Anubias, and Amazon swords, but not for demanding stem plants or carpeting species. If you plan to grow medium or high-light plants, the twin-tube version is necessary, or you will need to retrofit LEDs.
How Clearseal Hoods Compare to Alternatives
Clearseal is a solid mid-range option within the UK market, but it is not the only choice and not necessarily the best one depending on your situation.
Aqua One and Jewel Hoods
Aqua One (an Australian brand with strong UK distribution) and Jewel (a German manufacturer) both offer hoods in similar metric sizes. Jewel hoods in particular are well-regarded for better hinge construction and built-in T5 lighting options, which produce meaningfully more lumens per watt than T8. If you are starting fresh with a new tank, buying a Jewel tank-and-hood combo often works out cheaper than buying separately.
Open-Top and Custom Canopies
Open-top tanks with custom timber or PVC canopies have become more popular as hobbyists shift to LED lighting that generates less evaporation than fluorescent. An open-top tank loses slightly more water to evaporation but provides better gas exchange and easier access for maintenance. If you are running a heavily planted tank with CO2 injection, some CO2 is lost through the surface on open-top setups, which is worth factoring into your CO2 budget.
For more equipment options across the spectrum, top aquarium equipment gives you a wider comparison of what is available.
Where to Buy Clearseal Hoods
Clearseal products are primarily sold through UK aquatic retailers. Maidenhead Aquatics, Swell UK, and Aquatic Superstore carry the range online and ship throughout the UK. Delivery costs make ordering from the US impractical unless you are sourcing for a specific Clearseal tank.
If you find a Clearseal hood on eBay from a UK seller, shipping weight runs 2-4kg for most sizes, which translates to substantial international shipping costs. For anything outside the UK, it is almost always more practical to find a local hood or canopy option that matches your tank's actual dimensions.
FAQ
Are Clearseal hoods compatible with standard US aquariums? Generally not without modification. Clearseal uses metric sizing that does not align with standard US tank widths. A 90cm Clearseal hood is about 35.4 inches, which will not sit flush on a standard 36-inch US aquarium. If you have a Clearseal tank and need a matching hood, the sizing works. For US standard tanks, look at Aqueon, Marineland, or Perfecto hoods instead.
Can I retrofit LED lighting into a Clearseal hood? Yes, and many owners do. The interior of Clearseal hoods accommodates standard LED strip bars from Arcadia, Interpet, and third-party suppliers. Retrofitting to LED reduces heat inside the hood, decreases condensation, and improves light quality compared to the original T8 tube. You will need to drill or cut a small cable entry if the existing holes do not accommodate your LED driver cable.
How long do Clearseal hoods last? The plastic body typically lasts five to ten years. The most common failure point is the front-flap hinge, which becomes brittle with UV exposure and repeated use. Replacement hinges are available, so a cracked hinge does not necessarily mean end of life for the hood. The fluorescent tube fitting can also fail, but replacing the ballast or converting to LED extends the hood's useful life considerably.
What sizes does Clearseal make hoods in? Clearseal hoods are available in sizes from 60cm (about 24 inches) to 122cm (48 inches) and larger for commercial applications. All sizes are in metric dimensions to match Clearseal's own tank range. The most common sizes stocked by UK retailers are 60cm, 75cm, 90cm, and 120cm.
Summary
Clearseal hoods are well-built plastic hoods designed for Clearseal's metric-dimension tank range and sold primarily through UK aquatic retailers. They work well for their intended purpose, though the T8 single-tube lighting is limited for planted tanks and the hinges have a known wear issue over time. For UK hobbyists with Clearseal tanks, they are a practical and affordable choice. For hobbyists outside the UK shopping for standard US-dimension tanks, a domestically available hood from Aqueon or Marineland will be a better fit both literally and practically.