The lack. And which space heater do you use for which occasion? That is why you need to add conditioner before your use it for the fish. You dont have to go far to find horror stories of preset heaters killing fish. First of all, attach the suction cups provided with the package. Please use a different way to share. 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Aqueon 100W Preset Aquarium Submersible Heater up to 30 gal. 9 Different Aquarium Water Sources (One is dangerous! TL;DR- Save yourself the stress and money, don't get this heater. if (window.ue_ihe === 1) { As you can see it depends on just two parameters. You May Also Like. When researching them I wasnt really satisfied. Check it out in a 5-gallon Aqueon Minibow. @-webkit-keyframes wiggle{from{-webkit-transform:translate3d(0rem,0,0);transform:translate3d(0rem,0,0)}to{-webkit-transform:translate3d(1.7rem,0,0);transform:translate3d(1.7rem,0,0)}50%{-webkit-transform:translate3d(3.4rem,0,0);transform:translate3d(3.4rem,0,0)}70%{-webkit-transform:translate3d(.85rem,0,0);transform:translate3d(.85rem,0,0)}90%{-webkit-transform:translate3d(2.55rem,0,0);transform:translate3d(2.55rem,0,0)}}@keyframes wiggle{from{-webkit-transform:translate3d(0rem,0,0);transform:translate3d(0rem,0,0)}to{-webkit-transform:translate3d(1.7rem,0,0);transform:translate3d(1.7rem,0,0)}50%{-webkit-transform:translate3d(3.4rem,0,0);transform:translate3d(3.4rem,0,0)}70%{-webkit-transform:translate3d(.85rem,0,0);transform:translate3d(.85rem,0,0)}90%{-webkit-transform:translate3d(2.55rem,0,0);transform:translate3d(2.55rem,0,0)}}.turbo-checkout-swipe-area{position:relative}.turbo-checkout-swipe-area-text{margin-left:5.7rem;background:#f7e1a9}.turbo-checkout-swipe-padding{padding:1.9rem 0!important}.turbo-checkout-swipe-handle{position:absolute;left:0;width:5.7rem;height:100%;background:url(data:image/svg+xml;base64,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) center/35% no-repeat #f2c13c}.turbo-checkout-swipe-animate{-webkit-transition:all 150ms ease-out;transition:all 150ms ease-out}.turbo-checkout-status-contents{width:100vw}.turbo-checkout-status{width:100%;position:absolute;background:#ebf9ea}.turbo-checkout-status.turbo-checkout-in-progress{height:100%;max-width:5.7rem;overflow:hidden}.turbo-checkout-status.turbo-checkout-completed{display:none}.turbo-checkout-wiggle{-webkit-animation:wiggle .5s .4s 1 backwards;animation:wiggle .5s .4s 1 backwards}.turbo-checkout-status{color:#008500;box-shadow:0 0 0 1px #89cb84 inset}.turbo-checkout-status-contents{font-style:italic!important} .quantityDropdownButtonSizeFullWidth{white-space:nowrap;width:100%!important}.quantityBoxHighlight,.quantityBoxHighlight::after{border-color:#d00!important}.quantityBoxHighlight .a-button-text{color:#d00}.alertQuantity{display:none;margin:auto;color:#c40000;width:100%} Other possible reasons are current flow through the filter and fast and unusual patterns of heating. (window.AmazonUIPageJS ? Its impressive just how slim this heater is. The original Multi-Watt steel fin heater. But, why is the aquarium heater not functioning, and how may the problem be resolved? .add-to-shopping-list-modal .atl-dropdown,.atl-dropdown-option,.truncate-to-one-line{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.add-to-shopping-list-modal{max-width:280px}.add-to-shopping-list-modal .atl-asin-title-max-height{max-height:3em}.add-to-shopping-list-modal .hide-overflow{overflow:hidden}.fresh #heroImageContainer #twister_feature_div{padding-top:1.8rem}.fresh #heroImageContainer #twister_feature_div .stacked-dimensions .dimension{margin-bottom:.5rem!important}.fresh #heroImageContainer #twister_feature_div .stacked-dimensions .dimension .dimension-info{padding-top:0;padding-bottom:0}.atfc-conflict-dialog{max-width:270px}.atfc-slot-conflict-dialog{max-width:330px}#availability_feature_div #fresh-exclusivity-info{padding-bottom:10px}#actionPanel.ap-fresh 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.title-expander:not(.unclamp){display:-webkit-box!important;-webkit-line-clamp:2!important;-webkit-box-orient:vertical!important;overflow:hidden!important;text-overflow:ellipsis!important;cursor:pointer}#freshProductTitleGroup #title.title-expander.unclamp{z-index:11;opacity:1;background:rgba(255,255,255,.9);box-shadow:0 .3rem .6rem #fafafa}#freshProductTitleGroup #expandTitleToggle{height:2rem;right:-2.5rem;bottom:0rem;position:absolute;display:inline-block;width:2rem;background-size:130px 20px}#freshProductTitleGroup #expandTitleEnclosure{position:relative;margin-bottom:0rem}#freshProductTitleGroup #title.title-expander.with-caret{padding-right:2.5rem!important}#freshProductTitleGroup #title.title-expander.unclamp{padding-right:2.5rem!important}#freshProductTitleGroup .title-expander i{display:none}#freshProductTitleGroup .with-caret #expandTitleToggle{background-image:url(https://m.media-amazon.com/images/S/sash/Hr1QS3iY2aD0OlE.png)}#freshProductTitleGroup .unclamp #expandTitleToggle{background-image:url(https://m.media-amazon.com/images/S/sash/silHbV9e-r5wo6A.png)}#fresh-add-on-details-link{color:#0066c0;font-size:1.1rem;line-height:1.5}.hlcx_cmp_table_fresh_atc{max-width:180px;margin-left:auto;margin-right:auto;padding-bottom:5px;padding-top:0;padding-left:5px;padding-right:5px}#hlcx_cmp_fresh_atc_row>td{border-top:none;border-right:none;border-left:none;background:0 0;padding:0}.hlcx_cmp_fresh_title_row>.hlcx-cmp-title-col{border:none;background:0 0}.hlcx_cmp_fresh_title_row{border:none;background:0 0;padding-bottom:0}.product-overview-card-deck{margin-left:-1.4rem;margin-right:-1.4rem}.product-overview-single-card{padding-top:.5rem;padding-bottom:.5rem} The Aqueon Mini Aquarium Heater is an energy-conserving and efficient 15 watt heater for small tanks between 4 - 10 gallons (20 - 40 liters). 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