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 950F Series Internal Filter
A powerhead sitting on top of a slotted strainer tube packed with sponge. The bigger 970F and 980F push a lot of water for an internal filter.
Updated
470–1,550 L/h4 models
Will it suit my tank?
litres
Best for
A larger tank that needs strong extra circulation plus some mechanical filtration.
Worth knowing
The larger sizes are bulky and strong for a planted tank; they can flatten stem plants and are hard to hide.
What stands out
- Four sizes, 470 to 1550 L/h
- Powerhead-over-strainer design
- Directional outlet
- Tall models reach deep tanks
Models and specs
| Model | Flow | Tank size | Power | Head width |
|---|---|---|---|---|
| 950F52 0021 | 470 L/h | up to 90 L | 7 W | 6.8 cm |
| 960F52 0022 | 1,030 L/h | up to 180 L | 16 W | 8.1 cm |
| 970F52 0023 | 1,500 L/h | up to 180 L | 24.8 W | 9.2 cm |
| 980F52 0024 | 1,550 L/h | up to 300 L | 29.3 W | 9.2 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 950F Series Internal Filter, drawn from its specs.
What size tank is the Dophin 950F Series Internal Filter good for?
Using the 5 to 12 times turnover rule for planted tanks: 950F (470 L/h, suits roughly 39–94 L); 960F (1,030 L/h, suits roughly 86–206 L); 970F (1,500 L/h, suits roughly 125–300 L); 980F (1,550 L/h, suits roughly 129–310 L). The maker rates the range for tanks up to 300 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 950F Series Internal Filter best for?
A larger tank that needs strong extra circulation plus some mechanical filtration.
Is there anything to watch out for with the Dophin 950F Series Internal Filter?
The larger sizes are bulky and strong for a planted tank; they can flatten stem plants and are hard to hide.
What are the alternatives to the Dophin 950F Series 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.