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Pleased with the speed of delivery, the packing was good (both amazon and affinity).
In summary - Purchased the affinity heater after a lot of searching, looking at the designs available, reading reviews of the various heaters out there, plus this been the lowest power I could find and thus lowest running costs. This has proven itself to be a very good buy. I bought at £24, but I would still recommend at the present £32 cost, even over the cheaper rod/foam heaters
The design is simple, build quality good, no problem with attaching the heater rod (fitted inside the convection tube) to the float, just push and twist for a firm grip.
I like the design of using a convection tube, will keep water travelling closely up past the heater rod and thus end up with heated water at a low power use jetting out at the top of the tube to the surface of the pond.
The white plastic packing that is embedded in the float is quite obviously meant for floatation by the way that it is hooked into it.
The 10m cable is ideal for the job.
Keep hold of the box for summer storage.
Our small bath sized pond spends all of the day in shade at this time of year, and thus normally gets a very thick covering of ice and is not visable when snow settles. Last year was really bad and even with us clearing a hole every day we ended up with dead toads and fish frozen in the ice.
Over the last few weeks of snow and freezing temperatures the heater has kept a hole about the size of a dinner plate ice free and most of the pond snow free, not just the hole in the middle of the float but round the edges to a good size.
The hole gets visited by birds and the cat that has adopted us as one of his owners, I see the fish passing under the hole quite happily.
The 50watt heater is left on 24/7, thus using 1.2kw, costing us £0.16 a day with the tariff that we are on.
Video of heater in action attached.