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 TF Internal Filter
A tall corner-style internal filter that comes with a spray bar, so the return can be spread along the back of the tank instead of blasting one spot.
Updated
300–650 L/h3 models
Will it suit my tank?
litres
Best for
A 50 to 150 litre tank where you want gentle, spread-out flow without a canister.
Worth knowing
Internal filters take up visible space in the scape, and the media capacity is small next to a canister.
What stands out
- Three sizes, 300 to 650 L/h
- Spray bar included
- Slim profile for the back corner
- Suction-cup mounting
Models and specs
| Model | Flow | Tank size | Power | Spray bar |
|---|---|---|---|---|
| TF-30052 0018 | 300 L/h | up to 50 L | 4.5 W | 16 cm |
| TF-50052 0019 | 450 L/h | up to 100 L | 6 W | 18 cm |
| TF-80052 0020 | 650 L/h | up to 150 L | 12 W | 18 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 TF Internal Filter, drawn from its specs.
What size tank is the Dophin TF Internal Filter good for?
Using the 5 to 12 times turnover rule for planted tanks: TF-300 (300 L/h, suits roughly 25–60 L); TF-500 (450 L/h, suits roughly 38–90 L); TF-800 (650 L/h, suits roughly 54–130 L). The maker rates the range for tanks up to 150 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 TF Internal Filter best for?
A 50 to 150 litre tank where you want gentle, spread-out flow without a canister.
Is there anything to watch out for with the Dophin TF Internal Filter?
Internal filters take up visible space in the scape, and the media capacity is small next to a canister.
What are the alternatives to the Dophin TF 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.