Boyu · Internal
SP-C / SP-B Internal Filter
- Flow
- 300–1,400 L/h
Quarantine, hospital or grow-out tanks, and simple community tanks that need an easy internal filter.
4 models
Dophin · Internal
Dophin KF Internal Filter
Very small internal filters, only 8 to 9.5 cm tall, with an adjustable outlet nozzle. The KF-160 is the slimmest of the four.
Updated
200–280 L/h4 models
Will it suit my tank?
litres
Best for
A nano or shrimp tank of 30 to 70 litres that needs a tiny, cheap internal filter.
Worth knowing
The intake is not shrimp-safe as supplied, so cover it with a sponge in a breeding tank.
What stands out
- Four mini sizes, 200 to 280 L/h
- 8 to 9.5 cm tall
- Adjustable outlet nozzle
- Under 5 W
Models and specs
| Model | Flow | Tank size | Power | Dimensions (L × W × H) |
|---|---|---|---|---|
| KF-15052 0015 | 200 L/h | up to 50 L | 2.8 W | 4.3 × 3 × 8 cm |
| KF-16052 0126 | 200 L/h | up to 30 L | 2.8 W | 4.3 × 3 × 9.5 cm |
| KF-20052 0016 | 240 L/h | up to 50 L | 3 W | 4.7 × 3 × 8 cm |
| KF-35052 0017 | 280 L/h | up to 70 L | 4.5 W | 4.8 × 3.8 × 9.5 cm |
- Brand
- Dophin
- Figures quoted
- 230 V / 50 Hz version
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 filters
Eheim · Internal
aqua Corner Filter
- Tank size
- 100–200 L
Beginner planted tanks of roughly 100 to 200 litres where you want something simple that hides in a corner.
1 model
Eheim · Internal
Aquaball
- Flow
- 480–650 L/h
- Tank size
- 30–180 L
Small to medium low-tech planted tanks, or as a backup filter and circulation boost on a bigger tank.
3 models
Eheim · Internal
Biopower
- Flow
- 550–750 L/h
- Tank size
- 80–240 L
Medium planted tanks without room for a canister, or tanks with a heavier fish load that need more biology than a basic internal.
3 models
Frequently asked questions
Quick answers about the Dophin KF Internal Filter, drawn from its specs.
What size tank is the Dophin KF Internal Filter good for?
Using the 5 to 12 times turnover rule for planted tanks: KF-150 (200 L/h, suits roughly 17–40 L); KF-160 (200 L/h, suits roughly 17–40 L); KF-200 (240 L/h, suits roughly 20–48 L); KF-350 (280 L/h, suits roughly 23–56 L). The maker rates the range for tanks up to 70 L. Real flow with media and hoses is lower than the rated figure, so pick the bigger model if you are between sizes.
Who is the Dophin KF Internal Filter best for?
A nano or shrimp tank of 30 to 70 litres that needs a tiny, cheap internal filter.
Is there anything to watch out for with the Dophin KF Internal Filter?
The intake is not shrimp-safe as supplied, so cover it with a sponge in a breeding tank.
What are the alternatives to the Dophin KF Internal Filter?
Other filters worth comparing: Boyu SP-C / SP-B Internal Filter, Eheim aqua Corner Filter, Eheim Aquaball. Add any of them to the compare table to see the specs side by side.