Best Aquarium Heaters 2026

A heater is essential for tropical fish keeping. Choose the right wattage for your tank size.

Wattage Guidelines | Tank Size | Volume | Recommended Wattage | |-----------|--------|-------------------| | 30cm | Approx. 12L | 50W | | 45cm | Approx. 30L | 100W | | 60cm | Approx. 57L | 150W | | 90cm | Approx. 157L | 300W |

Recommended Heaters

1. GEX Safe Cover Navi Pack (150W) Price: Approx. 3,500 yen. Integrated thermostat with adjustable temperature. Cover prevents fish burns.

2. Tetra 26°C Mini Heater (50W) Price: Approx. 1,500 yen. Auto heater for small tanks. Fixed at 26°C for simplicity.

3. Evaris Preset Auto Heater (100W) Price: Approx. 2,000 yen. Slim design that doesn't interfere with layout.

4. GEX Heating Tube + Thermostat NX003N Price: Approx. 5,000 yen. Separate unit for precise temperature control. Suitable for breeding temperature adjustments.

5. Kotobuki Safety Heat i (200W) Price: Approx. 3,000 yen. Dry-burn protection. Safe even if accidentally exposed above water during water changes.