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 FC Filter Box
Slim box-shaped internal filters with the pump at the bottom and a waterfall-style outlet at the top. Most use a drop-in sponge and carbon cartridge, and the range runs from tiny nano sizes up to the tall FC-601.
Updated
180–670 L/h5 models
Will it suit my tank?
litres
Best for
A small desktop or nano tank that needs a compact, cheap internal filter.
Worth knowing
Cartridges are an ongoing cost, and the waterfall outlet splashes, which is poor for CO2; for planted tanks swap the carbon for plain sponge once it is spent.
What stands out
- Five sizes, 180 to 670 L/h
- Low-mounted pump pulls from near the substrate
- Drop-in cartridge, so no wet hands
- Suits shallow tanks
Models and specs
| Model | Flow | Tank size | Power | Dimensions (L × W × H) | Flow |
|---|---|---|---|---|---|
| FC-60158 0019 | 670 L/h | up to 130 L | 6.3 W | 20 × 6.5 × 39 cm | – |
| FC-60252 0128 | 200 L/h | up to 30 L | 3 W | – | 170 to 200 L/h |
| FC-60352 0134 | 280 L/h | up to 55 L | 4.2 W | 8 × 4 × 16 cm | – |
| FC-60452 0135 | 380 L/h | up to 75 L | 5 W | 13 × 4.8 × 19 cm | – |
| FC-70052 0132 | 180 L/h | up to 35 L | 3 W | 6 × 4.8 × 14 cm | – |
- Brand
- Dophin
- Figures quoted
- 230 V / 50 Hz version
- Media
- Sponge and carbon cartridge (FC-601 uses layered media)
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 FC Filter Box, drawn from its specs.
What size tank is the Dophin FC Filter Box good for?
Using the 5 to 12 times turnover rule for planted tanks: FC-601 (670 L/h, suits roughly 56–134 L); FC-602 (200 L/h, suits roughly 17–40 L); FC-603 (280 L/h, suits roughly 23–56 L); FC-604 (380 L/h, suits roughly 32–76 L); FC-700 (180 L/h, suits roughly 15–36 L). The maker rates the range for tanks up to 130 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 FC Filter Box best for?
A small desktop or nano tank that needs a compact, cheap internal filter.
Is there anything to watch out for with the Dophin FC Filter Box?
Cartridges are an ongoing cost, and the waterfall outlet splashes, which is poor for CO2; for planted tanks swap the carbon for plain sponge once it is spent.
What are the alternatives to the Dophin FC Filter Box?
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.