Boyu · Glass
DR Digital Heater
- Heater
- 50–300 W
Everyday tropical tanks where you want to see the temperature without a separate thermometer.
6 models
Oase · Glass
Oase HeatUp
An adjustable glass heater with a bimetal thermostat, available from 25 W to 400 W. It is the same heater Oase builds into its Thermo filters, and it can be fitted into a FiltoSmart or BioMaster later, or used in the tank with the supplied holder. A plain, dependable choice if you just want a heater that holds temperature.
Updated
25–400 W9 models
Will it suit my tank?
litres
Best for
Oase filter owners who want to add heating later, or anyone after a simple adjustable heater.
Worth knowing
A 25 to 50 W unit is still 20 cm long, so check it fits a shallow nano.
What stands out
- Nine wattages from 25 to 400 W
- Bimetal thermostat with adjustable setting
- Retrofits into FiltoSmart and BioMaster filters
- Mounting holder included for in-tank use
Models and specs
| Model | Heater | Length |
|---|---|---|
| 2545446 | 25 W | 20.5 cm |
| 5042724 | 50 W | 20.5 cm |
| 7542725 | 75 W | 24.3 cm |
| 10042726 | 100 W | 24.3 cm |
| 15042727 | 150 W | 31.5 cm |
| 20042728 | 200 W | 31.5 cm |
| 25042729 | 250 W | 37 cm |
| 30042730 | 300 W | 37 cm |
| 40077120 | 400 W | 44 cm |
- Brand
- Oase
- Thermostat
- Bimetal, adjustable
- Diameter
- 23 mm
- Mounting
- In-tank holder, or inside FiltoSmart/BioMaster
Figures from Charterhouse Aquatics's product listing. Makers revise products, so check the current figures before buying. Photos supplied by the brand or its distributor.
Compare with
Browse all heaters
Boyu · Glass
DR-9 Series Heater
- Heater
- 50–300 W
General tropical tanks on a budget.
7 models
Boyu · Glass
GR Glass Heater
- Heater
- 100–300 W
Medium tanks where you want an easy-to-read set point on the outside of the tank.
5 models
Boyu · Glass
HT Adjustable Heater
- Heater
- 50–300 W
Budget heating for community and planted tanks.
6 models
Frequently asked questions
Quick answers about the Oase HeatUp, drawn from its specs.
What wattage is the Oase HeatUp?
25 to 400 W across the range. As a rule of thumb that covers roughly 17–400 L in a normally heated room, at about 1 W per litre.
Who is the Oase HeatUp best for?
Oase filter owners who want to add heating later, or anyone after a simple adjustable heater.
Is there anything to watch out for with the Oase HeatUp?
A 25 to 50 W unit is still 20 cm long, so check it fits a shallow nano.
What are the alternatives to the Oase HeatUp?
Other heaters worth comparing: Boyu DR Digital Heater, Boyu DR-9 Series Heater, Boyu GR Glass Heater. Add any of them to the compare table to see the specs side by side.