Find Reviews and Compare Prices for:       All ProductsHeaters     4.6 (4)   Add a review Hydor THEO Heater 50 Watt   Theo Heater 50 watt by Hydor. Patented heating element automatically turns off if water level declines Have a question? Just Ask! Member Reviews Compare Prices Product Spec Send to a friend Set Price Alert Searched Hydor THEO Heater 50 Watt in 150 stores, 6 results found Image Description   Store   Price Hydor 50W Submersible Aquarium Heater - Original Theo If this item doesn't belong here, click Remove and help us keep our results accurate.   Amazon.com   2 Store Reviews   $7.64 (used) Go to Store Hydor 50W Submersible Aquarium Heater - Original Theo If this item doesn't belong here, click Remove and help us keep our results accurate.   Amazon.com   2 Store Reviews   $15.91 Go to Store HYDOR THEO 50W SUBMERS HEATER [Misc.] If this item doesn't belong here, click Remove and help us keep our results accurate.   Amazon.com   2 Store Reviews   $17.98 Go to Store Theo Submersible Aquarium Heater Wattage: 50 If this item doesn't belong here, click Remove and help us keep our results accurate.   Amazon.com   2 Store Reviews   $24.2 Go to Store THEO SHATTERPROOF HEATER If this item doesn't belong here, click Remove and help us keep our results accurate.   Amazon.com   2 Store Reviews   $32.81 Go to Store Theo Submersible Aquarium Heater Wattage: 50 If this item doesn't belong here, click Remove and help us keep our results accurate.   Amazon.com   2 Store Reviews   $72.72 (used) Go to Store You can also search these stores   Find this product on eBay   eBay   5 Store Reviews   Search on eBay Are we missing a store? Let us know! Something wrong in this page? Let us know! Related products: More Hydor Heaters Other Heaters internal use: spec361