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 F Series Internal Filter
A tall, slim internal filter in three sizes with a blue flow-adjust knob on top; the small F-800 can take a rain bar.
Updated
360–800 L/h3 models
Will it suit my tank?
litres
Best for
A mid-sized tank where you want an internal filter that tucks into a back corner.
Worth knowing
Like any internal box it takes up room in the scape and holds less media than a canister.
What stands out
- Three sizes, 360 to 800 L/h
- Adjustable flow
- Rain bar option on F-800
- Suits tanks from 80 to 160 litres
Models and specs
| Model | Flow | Tank size | Power | Dimensions (L × W × H) |
|---|---|---|---|---|
| F-80052 0001 | 360 L/h | up to 80 L | 5.3 W | 6.5 × 5.5 × 14.8 cm |
| F-120052 0002 | 500 L/h | up to 120 L | 5.8 W | 7 × 6.2 × 23.8 cm |
| F-200052 0003 | 800 L/h | up to 160 L | 16 W | 7.5 × 6.5 × 27.8 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 F Series Internal Filter, drawn from its specs.
What size tank is the Dophin F Series Internal Filter good for?
Using the 5 to 12 times turnover rule for planted tanks: F-800 (360 L/h, suits roughly 30–72 L); F-1200 (500 L/h, suits roughly 42–100 L); F-2000 (800 L/h, suits roughly 67–160 L). The maker rates the range for tanks up to 160 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 F Series Internal Filter best for?
A mid-sized tank where you want an internal filter that tucks into a back corner.
Is there anything to watch out for with the Dophin F Series Internal Filter?
Like any internal box it takes up room in the scape and holds less media than a canister.
What are the alternatives to the Dophin F 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.