Chihiros · Electrolytic
Doctor 5
Freshwater planted tanks where you want algae prevention and a temperature alarm in one small gadget.
1 model
Twinstar · Electrolytic
Twinstar Nano Sterilizer / Algae Inhibitor
Twinstar's electrolytic steriliser: a small controller outside the tank powers a reactor disc on the glass that produces short-lived oxidising radicals. The idea is to knock back algae spores and bacteria before they take hold, without a UV lamp or plumbing into the filter.
Updated
Will it suit my tank?
litres
Best for
Planted tanks up to about 250 L where you want an extra hedge against green water and algae, especially during the first months.
Worth knowing
It supports, not replaces, balanced light, CO2 and nutrients, and the reactor disc needs replacing and descaling over time.
What stands out
- Four sizes: M3, M5, Nano and Nano Plus
- Reactor mounts inside the tank, no filter plumbing
- Maker states it is safe for fish, shrimp, plants and filter bacteria
- Best started on a new tank before algae appears
Models and specs
| Model | Tank size | Tank size | Reactor |
|---|---|---|---|
| M3TWSM3 | 19–49 L | 5 to 13 US gal | – |
| M5TWSM5 | 19–117 L | 5 to 31 US gal | – |
| NanoTWSNANO | 30–120 L | – | M5 |
| Nano PlusTWSNANOPLUS | 50–250 L | – | M9 |
- Brand
- Twinstar
- Method
- Electrolysis (free radicals)
- Install
- Reactor disc on glass, controller outside the tank
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
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Chihiros · Electrolytic
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- Tank size
- up to 125 L
Nano and small planted tanks, including shrimp tanks, that want an algae and bacteria hedge.
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Mid-size and larger planted tanks where you want an extra tool against algae alongside good maintenance.
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Boyu · UV clarifier
Submersible UV Steriliser
- UV lamp
- 4–20 W
Knocking out a green water bloom or running in a sump on a larger system.
6 models
Frequently asked questions
Quick answers about the Twinstar Nano Sterilizer / Algae Inhibitor, drawn from its specs.
What size tank is the Twinstar Nano Sterilizer / Algae Inhibitor for?
The maker rates it by model: M3 up to 49 L, M5 up to 117 L, Nano up to 120 L, Nano Plus up to 250 L.
Who is the Twinstar Nano Sterilizer / Algae Inhibitor best for?
Planted tanks up to about 250 L where you want an extra hedge against green water and algae, especially during the first months.
Is there anything to watch out for with the Twinstar Nano Sterilizer / Algae Inhibitor?
It supports, not replaces, balanced light, CO2 and nutrients, and the reactor disc needs replacing and descaling over time.
What are the alternatives to the Twinstar Nano Sterilizer / Algae Inhibitor?
Other uv & sterilisers worth comparing: Chihiros Doctor 5, Chihiros Doctor Mate, Chihiros New Doctor. Add any of them to the compare table to see the specs side by side.