Im running a 16 tank fish room with roughly 800 gallons of water and the electric is roughly £90 a month to keep it running.
UK gallons? I've got around 735 US gallons between 24 tanks, plus a 65 & a 72 outside the fishroom for $65 monthly. It helps that the filtration for all the tanks in the fishroom are run off of one air pump that draws 60w. It also helps having all those tanks shoehorned into one room, the room itself is 78-80F.
I picked up one of these a while back; http/www.the-gadgeteer.com/review/kill_a..._monitor_review
I haven't had a chance to hook it up to any heaters, as they are an intermittent draw. Figuring out how much something that runs constantly costs is easy, intermittent appliances are tough.
Since the cost of electricity varies by location, posting KW usage would give folks a better idea, but figuring that one would take some work. I could hook this meter up to the 65 or 72 & get a monthly cost pretty easily, I would have to do all the heaters in the fishroom, along with a few canister filters & powerheads separately, although I could do them in groups off of one power strip.
No US gallons, UK gallons are not universally recognised and litres just make the numbers look too big and scary.
At the moment all my tanks are run either on big canisters or on small internal power filters, my filtration adds up to around 200 watts and i heat the room with a 2000w electric oil filled radiator.
Over the next few weeks i'm moving all my tanks into the new fish house which has far superior insulation and will be switching over to an air run filtration system for the smaller and low bioload tanks and a centralised system on one pump for the larger ones, although i am adding another 1200 gallons or so of tank volume so i dont expect the bills to come down too much. I will save on lighting though as the new fish house has a window so i will only need to light the room for a few hours in the evening.
/www.the-gadgeteer.com/review/kill_a..._monitor_review

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