The Didak Pool Solar Bowl Heater is a round solar water heater for your above-ground pool. The black dome has a ribbed, mirrored interior that captures solar heat and transfers it to the water flowing through it, so no extra energy is needed to warm the pool a little.
You connect the heater between your pool's filter pump and the return line, so water already circulating through the filter system passes through the solar dome first. The dome holds 5 litres and sits on adjustable legs, letting you angle it towards the sun for better performance.
The Solar Bowl Heater measures 57.9 x 57.9 x 24 cm and is meant as an addition to your existing filter pump, not a replacement for it. It's a simple, low-maintenance device you set up yourself on a flat, sunny spot next to the pool.
Handy if you want to stretch the swimming season a little without buying an electric heat pump. You can combine the heater with a pool cover to help hold the warmed temperature better overnight.