Also, ensure adequate water circulation. .subnav-cpi-progress{width:243px}.subnav-cpi-text{display:block}.subnav-cpi-upsell{width:243px;white-space:initial;word-wrap:normal;text-align:justify}.uss-cpi-margins{margin-left:15px;margin-right:15px}.uss-cpi-super-title{color:#df003b}.uss-cpi-text{color:#000} However, that doesnt mean you lose $324 every year. The next aquarium heater is the only one you should consider. 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Designed with a shatterproof housing and thermal safety shut-off, this compact and completely submersible mini heater is perfect for desktop aquariums with a minimum size of 2.5 gallons and up to 5 gallons. I personally dislike it for its size, but thats doesnt seem to turn many people off. Aqueon Mini Heater, 10 Watt ALL GLASS AQUARIUM $16.99 (No reviews yet) Write a Review For local CountryMax inventory, see the In-Store Availability tab below. Please try again. If you run your space heater on lower settings or for shorter durations, the cost to run your space heater decreases accordingly. 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He seems very happy now. .atc-mobile-spinner{background:url(https://images-na.ssl-images-amazon.com/images/G/01/udp/mobile/buy-box/atc-spinner.gif) 50% 50% no-repeat;background-size:25px}.atc-mobile-spinner-position{position:absolute;width:100%;height:100%;z-index:10001;left:0;top:0}.atc-mobile-toast-position{position:relative;left:-50%;top:-50%;z-index:10001}.atc-mobile-toast-styles{padding:2px 2px;border-radius:10px;text-align:center;background-color:#444c55}.atc-mobile-toast-transition{transition-property:padding;transition-duration:.2s;-webkit-transition-property:padding;-webkit-transition-duration:.2s}.atc-mobile-toast-progress-styles{width:80px;height:40px}.atc-mobile-toast-success-styles{padding:10px 10px}.atc-mobile-toast-failure-styles{padding:10px 10px}.atc-mobile-toast-container{position:fixed;left:50%;top:50%;z-index:10001}.atc-mobile-message-styles{font-size:16px;color:#FFF;font-weight:700;font-family:arial}.atc-mobile-toast-overlay-styles{position:absolute;top:0;left:0;z-index:10000;opacity:.6;height:30000px;background-color:#fff;width:100%}.atc-checkmark{color:rgba(255,255,255,.6)}#atc-stay-proceed-to-checkout-container{position:sticky;-webkit-position:sticky;top:0;z-index:100;width:100%;background:linear-gradient(to bottom,#fff,#f7f7f7);border-bottom:1px solid #CCC} However, as long as you watch this aspect, the entire water heater is a superb choice. If you made it this far, then you should have found the perfect small heater for your aquarium. 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Good news! Most space heaters and other heating systems have a built-in thermostat or some other way to control the power. But the submerged heater has a built-in indicator light. The lowest-priced brand-new, unused, unopened, undamaged item in its original packaging (where packaging is applicable).Packaging should be the same as what is found in a retail store, unless the item is handmade or was packaged by the manufacturer in non-retail packaging, such as an unprinted box or plastic bag.See details for additional description. #cmpsMobilePopover .a-icon-popover{display:none!important}#marginTop2Img{width:16px;margin-top:2px}#marginTop3Img{width:16px;margin-top:3px}#marginTop4Img{width:16px;margin-top:4px}#textReviews{position:absolute;left:-10000px;top:auto;width:2px;height:1px;overflow:hidden} Yearly electricity costs = 6 months * $54 = $324. While a tiny aquarium heater is tempting, the smallest lack essential features found in my slightly larger recommendations these hit the sweet spot between size and safety. There are several reasons for this issue. How much does a Space Heater cost to run? As you can see in the table above, most space heaters consume 1500W of power. * http://jqueryui.com This value applies to most households. The original Multi-Watt steel fin heater. Its a myth that space heaters that claim to be eco-friendly really decrease your electricity bill. Check it out in a 5-gallon Aqueon Minibow. It can be used with an additional built-in (TKIT-1) or wall-mount thermostat.