Blue Flame vs Infrared Heater: Which is better? item 6 Aqueon Submersible Aquarium Heater 10W Shatterproof Submersible Safety Off New, Brand New. I'm very happy with this product. I've been keeping fish for over 30 years and currently have 4 different aquariums it's an addiction. Picture Information. After a week I noticed my Betta acting weirdly agitated and saw the water Had this heater a little over a month for my 3.5 gallon Betta tank. .atc-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-spinner-position{position:absolute;width:100%;height:100%;z-index:10001;left:0;top:0}.atc-toast-position{position:relative;left:-50%;top:-50%;z-index:10001}.atc-toast-styles{padding:2px 2px;border-radius:10px;text-align:center;background-color:#444c55}.atc-toast-transition{transition-property:padding;transition-duration:.2s;-webkit-transition-property:padding;-webkit-transition-duration:.2s}.atc-toast-progress-styles{width:80px;height:40px}.atc-toast-success-styles{padding:10px 10px}.atc-toast-failure-styles{padding:10px 10px}.atc-toast-container{position:fixed;left:50%;top:50%;z-index:10001}.atc-message-styles{font-size:16px;color:#FFF;font-weight:700;font-family:arial}.udp-stop-scrolling{height:100%;overflow:hidden}.atc-toast-overlay-styles{position:absolute;top:0;left:0;z-index:10000;opacity:.6;height:30000px;background-color:#fff;width:100%}.twister-spinner-preload-app{background:url(https://images-na.ssl-images-amazon.com/images/G/01/amazonui/loading/loading-4x._V1_.gif)}.twister-spinner-preload{background:url(https://images-na.ssl-images-amazon.com/images/G/01/amazonui/loading/loading-4x._V1_.gif)} .r4m-sou-body{overflow:hidden!important}.r4m-sou-container{overflow:hidden!important;font-weight:300;font-size:15px;line-height:1.4em;color:#111;padding:14px 18px}.r4m-sou-product-details-container{display:grid}.r4m-sou-current-details{display:none}.r4m-sou-current-item-details{display:grid;grid-template-columns:1fr 1.4fr;align-items:center}.r4m-sou-current-image{max-width:100%}.r4m-sou-current-description{padding:10px;max-width:100%}.r4m-sou-comparison-details{border-left:1px solid #ddd}.r4m-sou-comparison-item-details{display:grid;grid-template-columns:1fr 1.4fr;align-items:center;justify-items:center}.r4m-sou-comparison-header{display:flex;align-items:center;padding:10px;border-bottom:1px solid #eaeded}.r4m-sou-comparison-header-price{white-space:nowrap;margin-right:10px;padding-right:10px;border-right:3px solid #d5dbdb}.r4m-sou-comparison-header-price *{color:#373E3E;white-space:nowrap;font-weight:700;font-size:44px!important;top:0!important}.r4m-sou-comparison-image{max-width:100%}.r4m-sou-comparison-description{padding:10px;max-width:100%}.r4m-sou-product-name{font-size:14px;line-height:1.4em;overflow:hidden!important;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical}.r4m-sou-star-rating{font-size:13px;margin-left:3px;top:-2px;position:relative;line-height:1em}.r4m-sou-rating-count{font-size:13px;margin-left:3px;top:-2px;position:relative;line-height:1em}.r4m-sou-mobile-tab-header{color:inherit!important}#r4m-sou-header{padding-left:0}#r4m-sou-card{margin-right:-1.4rem;margin-left:-1.4rem}.r4m-sou-container{padding:14px 0}.r4m-sou-comparison-details{margin-top:10px;border:1px solid #eaeded;border-radius:4px}.r4m-sou-comparison-details:last-child{padding-bottom:27px}.r4m-sou-comparison-header-price *{font-size:32px!important} I would recommend the Aqueon Pro as the runner-up, but they are currently in the middle of updating their heaters. 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The following three conditions determine the correct-sized heater for you: The power of an aquarium heater is measured in watts (W). .dpr-sample-images .dpr-anchor,.dpr-summary-widget.dpr-v2 .dpr-anchor{position:relative;top:-50px}.dpr-sample-images hr.bucketDivider,.dpr-summary-widget.dpr-v2 hr.bucketDivider{background:0 0!important;border-top:1px solid #ccc!important;margin-bottom:-36px!important;height:44px!important;border:0}.dpr-sample-images h2,.dpr-summary-widget.dpr-v2 h2{color:#c60!important;font-size:16px!important;margin-bottom:10px}.dpr-sample-images div.dpr-widget-content,.dpr-summary-widget.dpr-v2 div.dpr-widget-content{margin:0 0 25px 20px}#dpreviewSummary_feature_div .dpr-award-container{margin-top:-40px}#dpreviewSummary_feature_div .dpr-award-container img.dpr-award{width:90px}#dpreviewSummary_feature_div .dpr-award-container .a-box-inner{padding:5px;text-align:center}#dpreviewSummary_feature_div .dpr-headshots-container{text-align:center}#dpreviewSummary_feature_div .dpr-headshots-container img.dpr-avatar{margin:0 5px}.dpr-summary-full .dpr-scoring-container .a-meter{height:1.5rem}.dpr-summary-full .dpr-scoring-container .a-meter .a-meter-bar{background-color:#44A0E9;background:-moz-linear-gradient(top,#63b4f2,#44a0e9);background:-webkit-linear-gradient(top,#63b4f2,#44a0e9);background:-webkit-gradient(linear,left top,left bottom,color-stop(0,#63b4f2),color-stop(100%,#44a0e9));background:-o-linear-gradient(top,#63b4f2,#44a0e9);background:-ms-linear-gradient(top,#63b4f2,#44a0e9)}.dpr-sample-images .dpr-gallery-info{margin-bottom:10px;width:1010px}.dpr-sample-images .dpr-gallery-info h3{padding:0;font-size:medium;font-weight:400}.dpr-sample-images .dpr-gallery-info .dpr-info-line a.dpr-see-all-images span.dpr-link-offsite{color:#888}.dpr-sample-images .dpr-gallery-info .dpr-info-line span.dpr-open-originals-tooltip{float:right;color:#888}.dpr-sample-images .dpr-image-grid{position:relative}.dpr-sample-images .dpr-image-grid a.dpr-image{position:absolute;display:block}.dpr-sample-images .dpr-image-grid a.dpr-image img{position:absolute;left:0;top:0}.dpr-sample-images .dpr-image-grid a.dpr-image span.dpr-exif{display:block;position:absolute;left:0;bottom:0;right:0;background-color:#000;background-color:rgba(0,0,0,.75);color:#fff;font-size:9px;padding:2px 4px}.rtings__anchor{position:relative;top:-50px}.rtings__title{color:#e77600;font-size:21px}.rtings__quote{background:#eee;border-radius:5px;position:relative;margin-top:1rem;margin-bottom:3rem}.rtings__quote-badge{background:#fff;border:1px solid #ddd;border-radius:5px;position:absolute;top:-1rem;bottom:-1rem;left:1rem;width:17rem;margin-bottom:0}.rtings__quote-badge-inner{position:absolute;height:56px;margin-top:-28px;top:50%;width:16rem;margin-left:-7rem;left:50%}.rtings__quote-badge-image{display:inline-block;height:56px}.rtings__quote-badge-text{display:inline-block;font-size:.8rem;line-height:1.2em;font-weight:700;padding-top:.8rem}.rtings__quote-text{margin-left:19.5rem;padding:1rem}.rtings__quote-mark{font-family:Georgia;font-size:2.5em;line-height:1px;vertical-align:-11px;color:#555}.rtings__quote-mark--open{position:absolute;left:-1rem;top:12px}.rtings__header{font-weight:700}.rtings__score-meter{min-width:100px}.rtings__rating-row:first-child .rtings__rating-name,.rtings__rating-row:first-child .rtings__rating-score{font-size:1.2em;font-weight:700}.rtings__right-col{margin-top:1rem}.rtings__right-col .a-box-group{max-width:500px}.rtings__aspect-ratio{position:relative;width:100%;height:0;padding-bottom:56%}.rtings__aspect-ratio iframe{position:absolute;width:100%;height:100%;left:0;top:0}.rtings__score-meter--mobile{min-width:10rem}.rtings__score-meter--mobile .a-meter{height:2rem}table.rtings__compact-table--mobile tr td{padding-left:0}table.rtings__compact-table--mobile tr td:last-child{padding-right:0} For example, you run the heater for 10 minutes and then turn it off for an hour. I assumed an average 1500W space heater and the average US electricity rate of 15 cents per Kilowatt-hour for the calculation. If the light is off, you should rotate the temperature control knob on top of the heater. $14.00 Used. For best results use with an electronic line voltage wall thermostat.- Patented smart limit protection- Patented pic-a-watt element (250 Watt - 1500 Watt at 120-Volt)- Wall-mount thermostat- Squirrel cage blowerA new unit recently purchased to swap-out the grill as a painter accidentally got wall paint on one edge of the grill and the home owner insisted on replacement instead of cleaning the original grill. Minimum Trxn is INR 2500, Super Value Days: 5% Instant Discount up to INR 150 on Amazon Pay ICICI Credit Card Trxns. (window.AmazonUIPageJS ? Efficiency is similarly important. Here it is compared to a quarter, Here is one more option for small square or rectangular tanks, The Marina Betta is designed for the smallest of tanks, up to 1.5 gallons. .amazon_yum_mobile #displaySelector_burj_feature_div .primeNowYum,.amazon_yum_mobile #displaySelector_feature_div .primeNowYum,.amazon_yum_pantry_mobile #displaySelector_burj_feature_div .primeNowYum,.amazon_yum_pantry_mobile #displaySelector_feature_div .primeNowYum{margin-top:2.1rem}.amazon_yum_mobile #displaySelector_burj_feature_div #visual-rich-product-description .visualRpdText ul,.amazon_yum_mobile #displaySelector_feature_div #visual-rich-product-description .visualRpdText ul,.amazon_yum_pantry_mobile #displaySelector_burj_feature_div #visual-rich-product-description .visualRpdText ul,.amazon_yum_pantry_mobile #displaySelector_feature_div #visual-rich-product-description .visualRpdText ul{color:#111!important}.amazon_yum_mobile #displaySelector_burj_feature_div #visual-rich-product-description 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