Boyu · Hang-on-back
WF Waterfall Hang-on Filter
- Flow
- 150–720 L/h
Small to medium low-tech tanks and shrimp or betta setups on a budget.
5 models
Dophin · Hang-on-back
Dophin A Series Hanging Filter
A chunky hang-on-back filter with adjustable flow, an extendable intake and a media-change reminder dial. It comes either with an open media box (sponge, carbon, bio balls) or a carbon cartridge.
Updated
300–500 L/h4 models
Will it suit my tank?
litres
Best for
A 40 to 100 litre tank where you want a simple hang-on filter you can fill with your own media.
Worth knowing
Get the media box version for a planted tank, so you can skip carbon; like all hang-on filters the waterfall return drives off some CO2.
What stands out
- Four sizes, 300 to 500 L/h
- Choice of open media box or carbon cartridge version
- Adjustable flow and extendable intake
- Date and media-change indicator
Models and specs
| Model | Flow | Tank size | Power | Dimensions (L × W × H) |
|---|---|---|---|---|
| A-200051 0147 | 300 L/h | up to 40 L | 3.1 W | 14 × 13.8 × 19.5 cm |
| A-300051 0148 | 350 L/h | up to 60 L | 3.1 W | 15 × 14 × 20.5 cm |
| A-500051 0149 | 400 L/h | up to 80 L | 4.5 W | 18.5 × 15.5 × 22 cm |
| A-600051 0150 | 500 L/h | up to 100 L | 4.5 W | 20.5 × 15.5 × 23.5 cm |
- Brand
- Dophin
- Figures quoted
- 230 V / 50 Hz, media box version
- Versions
- Media box (sponge, carbon, bio balls) or carbon cartridge
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
Oase · Hang-on-back
BioStyle
- Flow
- 350–900 L/h
- Tank size
- up to 180 L
Small planted tanks or shrimp tanks where you want easy filtration without a canister or an internal box.
3 models
SunSun · Hang-on-back
CBG Hang-On Filter with UV
- Flow
- 500–800 L/h
- Tank size
- 38–190 L
Small to mid planted tanks that suffer from surface film or green water.
4 models
SunSun · Hang-on-back
HBL Series Hang-On Filter
- Flow
- 300–800 L/h
Nano and small planted tanks, shrimp tanks and quarantine setups.
12 models
Frequently asked questions
Quick answers about the Dophin A Series Hanging Filter, drawn from its specs.
What size tank is the Dophin A Series Hanging Filter good for?
Using the 5 to 12 times turnover rule for planted tanks: A-2000 (300 L/h, suits roughly 25–60 L); A-3000 (350 L/h, suits roughly 29–70 L); A-5000 (400 L/h, suits roughly 33–80 L); A-6000 (500 L/h, suits roughly 42–100 L). The maker rates the range for tanks up to 100 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 A Series Hanging Filter best for?
A 40 to 100 litre tank where you want a simple hang-on filter you can fill with your own media.
Is there anything to watch out for with the Dophin A Series Hanging Filter?
Get the media box version for a planted tank, so you can skip carbon; like all hang-on filters the waterfall return drives off some CO2.
What are the alternatives to the Dophin A Series Hanging Filter?
Other filters worth comparing: Boyu WF Waterfall Hang-on Filter, Oase BioStyle, SunSun CBG Hang-On Filter with UV. Add any of them to the compare table to see the specs side by side.