Aquatics Unlimited: Articles: How Much Electricity?
Image 1
Image 2
Image 3

How Much Electricity?

for the week of 6/3/98

Once they see the assortment of aquarium accessories that are plugged into the wall, many hobbyists wonder just how much their tank is costing them in electricity each month. Here's the basic formula:

Monthly Cost = (wattage) x (charge/kwh) x (hours/day) x 30 x .001

  • (wattage) can usually found on each item
  • (charge/kwh) can be found on your electric bill; residential is often .05 to .07
  • (hours/day) is how long the item is operating

For example, an aquarium pump might use 4 watts and runs 24 hours per day, so it's monthly energy cost would be:

4 x .06 x 24 x 30 x .001 = .17 or about 17 cents per month

Adding up all the items for a typical 20 gallon setup might look like this:

Item Wattage Hours/Day Cost
Light 15 12 .33
Air Pump 4 24 .17
Power Filter 9 24 .39
Heater 100 4* .72
Total   $1.61

* This number varies considerably depending on difference between room and aquarium temperatures. In cooler climates or seasons, the heater might run a total of 12 or more per day; in warmer situations, it may hardly run at all.

Larger aquariums will of course require somewhat larger amounts of energy, and it often pays to look into the wattage rating on items before purchasing them.

Submitted by: Jim Kostich


"Tip of the week" appeared regularly in 1999 and 2000.

Copyright © 1998 Aquatics Unlimited
All rights reserved.

Local Specials

seachem tidal filter 20% OFF!

aquavitro plant/coral tools 20% OFF!

aquavitro salinity salt 20% OFF!

hikari algae wafer 20% OFF!

elive single track strip light 20% OFF!

2.5 black tank $12

5.5 black tank $14

10 black tank $15

15L black tank $29

20H black tank $29

20L black tank $29

20X black tank $45*

29 black tank $45

30L black tank $55

30B black tank $69

30X black tank $69*

33 black tank $69*

37 black tank $69

38 black tank $79

40B black tank $79

40L black tank $89*

45 black tank $89

50B black tank $139*

55 black tank $99

65 black tank $139

75 black tank $129

90 black tank $199

120 black tank $329*

125 black tank $269*

150 black tank $459*

180 black tank $559*

210 black tank $659*

75 overflow tank $219*

90 overflow tank $269*

120 overflow tank $449*

125 overflow tank $379*

150 overflow tank $599*

180 overflow tank $659*

210 overflow tank $749*

Select Black Pine Stand 20% OFF!

REWARDS account may be required for special pricing. You may sign up and use the special pricing the same day!

* = SPECIAL ORDER; 50% deposit required

** = while supplies last

*** = specially marked tanks only; selection may vary during the sale

Aquatics Unlimited | 3550 S. 108th Street | Greenfield, WI 53228
Monday-Saturday 10:00 a.m. - 9:00 p.m., Sunday 10:00 a.m. - 6:00 p.m. | Phone: 414-543-2552 | Fax: 414-543-4929