Boyu · Canister
DGN-410 / 460 / 520 Canister Filter
- Flow
- 1,610 L/h
Mid to large planted tanks where you want to tune flow to the scape without swapping filters.
6 models
Dophin · Canister
Dophin CF688 Series Canister Filter
A round blue canister range from 800 to 1400 L/h, each size available with or without a built-in UV lamp (the UV versions add a UV suffix). The UV sits inside the canister behind a safety switch.
Updated
800–1,400 L/h4 models
Will it suit my tank?
litres
Best for
A 60 to 140 litre tank that suffers green water now and then, where a UV option in the same box saves buying a separate unit.
Worth knowing
UV only kills free-floating algae and microbes, not algae on leaves, and running it constantly can break down some chelated trace elements, so many planted-tank keepers only switch it on when needed.
What stands out
- Four sizes, 800 to 1400 L/h
- Optional internal UV lamp of 5 to 9 W
- Primer handle for easy start-up
- Spray bar, lily-style inlet/outlet pipes and directional spout included
Models and specs
| Model | Flow | Tank size | Power | Dimensions (L × W × H) | Power with UV | Media trays |
|---|---|---|---|---|---|---|
| CF688 | 800 L/h | up to 80 L | 10 W | 19 × 19 × 29 cm | 20 W | 1 |
| CF888 | 1,000 L/h | up to 100 L | 10 W | 19 × 19 × 41 cm | 21.5 W | 3 |
| CF1288 | 1,200 L/h | up to 110 L | 13.2 W | 23 × 23 × 41 cm | 25.5 W | 2 |
| CF1488 | 1,400 L/h | up to 140 L | 17 W | 23 × 23 × 48.5 cm | 29.3 W | 3 |
- Brand
- Dophin
- UV
- Optional; UV models are CF688UV, CF888UV, CF1288UV, CF1488UV (uvW applies to these)
- Media supplied
- Coarse sponge and filter wool
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
Boyu · Canister
DGN-80 / 120 UVC Canister Filter
- Flow
- 800–1,200 L/h
Medium to large community tanks where the owner wants mechanical, biological and UV treatment in one box.
2 models
Boyu · Canister
EF / EFU Canister Filter
- Flow
- 300–1,100 L/h
- Tank size
- 100–650 L
Budget-minded keepers with 100 to 650 litre tanks who want canister filtration and optional UV.
6 models
Boyu · Canister
FEF-230 / 280 Canister Filter
- Flow
- 800–1,000 L/h
Medium tanks around 150 to 300 litres where a budget UV canister makes sense.
2 models
Frequently asked questions
Quick answers about the Dophin CF688 Series Canister Filter, drawn from its specs.
What size tank is the Dophin CF688 Series Canister Filter good for?
Using the 5 to 12 times turnover rule for planted tanks: CF688 (800 L/h, suits roughly 67–160 L); CF888 (1,000 L/h, suits roughly 83–200 L); CF1288 (1,200 L/h, suits roughly 100–240 L); CF1488 (1,400 L/h, suits roughly 117–280 L). The maker rates the range for tanks up to 140 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 CF688 Series Canister Filter best for?
A 60 to 140 litre tank that suffers green water now and then, where a UV option in the same box saves buying a separate unit.
Is there anything to watch out for with the Dophin CF688 Series Canister Filter?
UV only kills free-floating algae and microbes, not algae on leaves, and running it constantly can break down some chelated trace elements, so many planted-tank keepers only switch it on when needed.
What are the alternatives to the Dophin CF688 Series Canister Filter?
Other filters worth comparing: Boyu DGN-410 / 460 / 520 Canister Filter, Boyu DGN-80 / 120 UVC Canister Filter, Boyu EF / EFU Canister Filter. Add any of them to the compare table to see the specs side by side.