EHEIM reeflex UV 350

The EHEIM reeflex UV uses a built-in reflector to significantly boost microorganism-killing UV-C radiation compared to conventional sterilizers.

EHEIM reeflex UV reduces microorganisms in the water and eliminates turbidity more efficiently than ever before.  

reeflexUV is yet another typical innovation from EHEIM: due to a built-in reflector the microorganism killing UV-C radiation is significantly increased and whereas in conventional UV-sterilizers the water is directed via detours past the UV-C burner, in the  EHEIM reeflexUV water it takes the direct route. There is no loss of performance, you need less energy and the level of effectiveness is 1.8 times greater.

reeflexUV should only be used in conjunction with the filter, in order to reduce small organisms (microorganisms, algae spores etc.) in the aquarium.

Special technology for clean water and healthy fish 

In a UV-sterilizer, the aquarium water is directed as a thin film past a UV-C lamp (burner). The UV-C radiation penetrates the water and kills off microorganisms, algae spores and other small organisms.

Using conventional technology the water is only irradiated on one side. EHEIM on the other hand has built in a reflector, via which the reflected radiation penetrates the water from more sides. Thus reeflexUV achieves a significantly higher performance level.

Furthermore, the EHEIM reeflex UV doesn’t have a complicated water flow system. The water is not redirected and flows around the burner without detours. So there is no loss of performance.

The AUTO OFF ensures an optimum level of safety. Since UV-C radiation can cause damage to skin and eyes, reeflexUV switches off immediately when the device is opened.

What you should also know:

Compared to normal waters the bacterial count in an aquarium is relatively high due to the small amount of water. It is worth reducing this and bringing it back to a normal level. However, the aquarium water should never be completely bacteria free.

Only floating bacteria in the water are captured by the UV-sterilizer. Colonized cleaning bacteria in the filter (compare biological filtration) and bacteria in the gravel substrate are spared.

Torpidity in the water, caused by bacteria or floating algae, is removed very efficiently by the UV-sterilization. Basically algae growth is curbed, because the spores are killed off.

UV-sterilizers generally ensure healthier fish, because the risk of infection is reduced. A UV-sterilizer is especially recommended for breeding tanks, because dangerous pathogens colonize on eggs or infect young livestock, which don’t yet possess enough power of resistance.

UV-sterilization in general doesn’t cause any kind of changes to the water values.

The EHEIM reeflex UV 350 makes routine water changes faster and less messy — see our guide to Aquarium Water Changes for how often and how much to change.

Compatibility

Sized for aquariums of roughly 80 to 350 litres, fresh or marine. It goes into the water circuit on the discharge side of an external filter, or is fed by a separate circulation pump (not supplied). Both 12/16 mm and 16/22 mm hose connections are in the box, so it drops into either of the common EHEIM hose sizes.

Flow rate is what decides what the unit actually achieves, and EHEIM publish two figures for it: up to 200 litres an hour to reduce bacteria and parasites, up to 400 litres an hour to clear algal turbidity. Run more water than that through it and the contact time is too short for the higher duty.

There is no fixed installation position or flow direction — it can be mounted whichever way the pipework suits. The lamp is 7 watts.

Safety & Precautions

• UV-C radiation injures skin and eyes. Never operate the bulb outside its housing, and never use it for anything else.
• The unit has an AUTO-OFF cut-out that kills the lamp when the housing is opened for a bulb change.
• The UV-C bulb contains mercury and breaks easily. Handle it carefully and do not touch the glass with bare fingers — use a soft cloth.
• Never run it without water flowing through it.
• Indoor use only, aquarium use only, water not above 35 °C. Protection class I, IP X7 (protected against short submersion only).
• Unplug everything in the tank before opening the unit or clearing a fault.
• The mains lead cannot be replaced; a damaged unit has to be scrapped.
• Leave a drip loop in the cable and keep the socket and plug dry.

EHEIM give the bulb an operating life of about 8,000 hours. Past that it still lights but no longer clears the water, which is the usual explanation for a UV unit that has quietly stopped working. Clean the glass tube inside the casing regularly with the cleaning brush as well — a filmed tube blocks the light.

What's in the Box

• Aluminium casing and casing cover, with 2 cross-head screws M5 × 10 mm
• UV-C bulb, packed separately from the unit
• Bulb fitting
• Ballast with mains cable
• Screw sleeves and union nut (hose safety)
• 2 hose connections ø 12/16 mm
• 2 hose connections ø 16/22 mm
• Glass function control window
• Holder with 4 fastening screws

EHEIM ship the bulb outside the unit deliberately, so it cannot break in transit — fitting it into the holder is the first job out of the box.

Warranty & Support

This product carries a 3-year manufacturer warranty from the date of purchase, covering material and manufacturing defects. EHEIM excludes wear parts — impeller, sealing rings, hoses and filter media — along with glass damage, units that have been opened, and any unit fitted with non-EHEIM parts.

Warranty support is handled by us directly. Message our WhatsApp support with your order number and we will diagnose the fault first — most cases are solved by replacing a single part, so you rarely need to send the whole unit. If the item does need to come back, it ships to our Delhi or Pune warehouse, whichever one served your order, and courier cost in both directions is borne by the customer. Your GST invoice is valid proof of purchase for the claim.

Returns & Replacement

Returns are accepted within 7 days of delivery, provided the item is unused and in its original packaging. Manufacturer-sealed items cannot be returned once the seal is broken, and sale-priced items are not refundable.

If your item arrives defective or damaged, message us on WhatsApp with your order number — or email us, if you would rather — and we will replace it. Approved replacements are delivered within 3 to 5 business days. Transit damage is covered by insurance on every shipment. If tracking shows delivered but nothing reached you, tell us within 72 hours, which is the reporting window Indian couriers allow. Damage caused during installation or use is not covered; replacement spares for such cases are chargeable.

Full terms are on our Cancellation & Returns page.