6. What heating equipment is available for an outdoor fish pond?
Electrical choices
- Heaters with analogue or digital controls, designed for easy installation at the plumbing stage and electrical stage.
- Compact heaters with a control box that can be sited remotely.
- Smaller heaters can be installed by DIYers, but those over 3kw need an electrician's expertise.
- Swimming pool heaters - once a favourite of Koi keepers, but not designed to heat a Koi pond so only buy from companies that provide specially modified equipment, with components that won't adversely affect your Koi or be adversely affected by fish and water treatments.
Gas boilers
Gas boilers are worth considering for ponds of over 22,730 litres (5,000 gallons). The initial costs are high, with the expense of a boiler, heat exchanger and the services of a gas fitter. However, running costs could be quite low (you need to check current gas tariffs) and if you can make use of your home's existing central heating boiler your installation costs will be much lower too.
Monitoring
If you're into gadgets, you could consider fitting a thermometer with remote readout in the house so you can monitor the situation conveniently, plus a temperature alarm to sound in the house so that you'll know immediately if there are any problems.
