Eheim · Preset
ThermoPreset
- Heater
- 50–200 W
- Tank size
- 25–400 L
Beginners and community planted tanks that are happy at 25 °C.
4 models
Dophin · Preset
Dophin AH-1000 Plastic Mini Heater
A fully submersible plastic-cased mini heater preset to 25 °C, in 10 and 25 W sizes.
Updated
10–25 W3 models
Will it suit my tank?
litres
Best for
A nano or small shrimp tank that just needs taking off the chill.
Worth knowing
No adjustment, so it will not suit fish that want cooler or warmer water; unplug before lifting it out.
What stands out
- Preset to 25 °C
- Plastic case, fully submersible
- 10 W or 25 W
- For tanks up to 30 litres
Models and specs
| Model | Heater | Tank size | Length | Width |
|---|---|---|---|---|
| AH-100257 0024 | 10 W | up to 20 L | 10.5 cm | 1.8 x 1.5 cm |
| AH-100052 0022 | 10 W | up to 15 L | 13.5 cm | 2.5 x 1.5 cm |
| AH-100152 0023 | 25 W | up to 30 L | 15 cm | 3.2 x 2 cm |
- Brand
- Dophin
- Temperature
- Fixed at 25 °C
- Case
- Plastic
Figures from the maker's published specifications. Makers revise products, so check the current figures before buying. Photos supplied by the brand or its distributor.
Compare with
Browse all heaters
Dophin · Preset
AH-1010 Mini Heater
- Heater
- 5–15 W
- Tank size
- up to 15 L
A small shrimp or betta tank where you just want a stable, sensible temperature.
3 models
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
Boyu · Glass
DR-9 Series Heater
- Heater
- 50–300 W
General tropical tanks on a budget.
7 models
Frequently asked questions
Quick answers about the Dophin AH-1000 Plastic Mini Heater, drawn from its specs.
What size tank is the Dophin AH-1000 Plastic Mini Heater for?
The maker rates it by model: AH-1002 up to 20 L, AH-1000 up to 15 L, AH-1001 up to 30 L.
What wattage is the Dophin AH-1000 Plastic Mini Heater?
10 to 25 W across the range. As a rule of thumb that covers roughly 7–25 L in a normally heated room, at about 1 W per litre.
Who is the Dophin AH-1000 Plastic Mini Heater best for?
A nano or small shrimp tank that just needs taking off the chill.
Is there anything to watch out for with the Dophin AH-1000 Plastic Mini Heater?
No adjustment, so it will not suit fish that want cooler or warmer water; unplug before lifting it out.
What are the alternatives to the Dophin AH-1000 Plastic Mini Heater?
Other heaters worth comparing: Eheim ThermoPreset, Dophin AH-1010 Mini Heater, Boyu DR Digital Heater. Add any of them to the compare table to see the specs side by side.