Marine livestock handles a steady temperature far better than a shifting one, and in a Queensland summer the problem is often heat rather than cold. This range covers submersible heaters and thermostats from Fluval, Marina, Bioscape and Aqua Medic, along with Teco chillers for tanks that climb past a safe range on hot days.

Reef tanks usually sit between 24 and 26 degrees Celsius. What matters more than the exact figure is that it does not swing several degrees between day and night, since corals and invertebrates are slower to adjust than fish.

On any tank worth protecting, a separate temperature controller or alarm is cheap insurance against a heater that sticks on. Shipped Australia wide from our North Lakes store in Brisbane.

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