Anybody any ideas of the running cost for a 8.5 watt water pump. Thanks in advance.

1 kWh = 1000Wh = 1 Unit = ~THB 5

1000Wh / 8.5W = 117.6 hours of running continuously for ~THB 5.

So around 5 Baht every 5 days, or almost exactly a Baht a day.

Budget other luxuries accordingly.

Not sure he can afford that....

8.5W?

Wifey's koi pond swallows 500W 24/7

And Jdietz's calculations are correct, as close to zero as it's possible to get

Unplug your phone charger, TV and anything else with a "standby" mode when they're not in use and you'll save as much.

Thanks for the replys been trying to explain to the wife that the use very little power.Stadavarious 13, I will probably be able to afford them if I give up a beer or two