Oxygen

Essential for fish, with a range of devices to aerate all sizes and types of pond. For example:

• Bottom drain aerator.
• Ceramic airstone.
• Oxygen dispenser.
• Air pump.
• Fountain and pump.

Temperature monitoring; ice prevention

• Pond thermometer - these range from basic dip-it-and-see to sophisticated digital monitors with alarms.
• Anti-ice device - various designs that stop ice forming in a small part of the pond.