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its very easy to work out.
All you do is look what wattage your heat/light/filter is. It will say on the globe or heater or pump/filter.
Lets say you use a 40watt globe.
Times 40 watts by the number of hours each day you use it.
40watts x 12hours =480watts total usage per day.
1000w total usage =1 unit.
480 watts = 0.48 units
Got you so far?
On your meter you are charged by the unit. Each unit will cost you soo much. The price of each unit will be on you last power bill. If not sure phone your local energy supplier to confirm price.
now just times the power unit cost by the amount of units you use.
Just go around and work out all your power usuage setups and hey presto your costings for power are done.
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"Ya cant trust a pig with watermelon ya know"
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