Find the lowest price for:       All ProductsHeaters     3.0 (1)   Add a review Hydor Theo Shatter Proof Heater 300 W   Theo Heater 300 watt by Hydor. Patented heating element automatically turns off if water level declines Have a question? Ask the Experts! Set Price Alert Compare Prices Product Spec Member Reviews Recommend to Friends Searched Hydor Theo Shatter Proof Heater 300 W in 150 stores, 39 results found Image Description   Store   Price HYDOR THEO Heater 300W (SUBMERSIBLE HEATER) If this item doesn't belong here, click Remove and help us keep our results accurate.   eBay (auction)   3 Store Reviews   $9.99 Go to Store Hydor Theo Ul Heater 300 Watt If this item doesn't belong here, click Remove and help us keep our results accurate.   fish.com   0 Store Reviews   $16.99 Go to Store THEO UL Heater 300W If this item doesn't belong here, click Remove and help us keep our results accurate.   Amazon.com   1 Store Reviews   $19.5 Go to Store Theo 300 Watt Submersible Heater - Hydor USA Inc If this item doesn't belong here, click Remove and help us keep our results accurate.   PetBlvd.com   0 Store Reviews   $20.76 Go to Store Theo Heater 300W If this item doesn't belong here, click Remove and help us keep our results accurate.   everythingreptileinc.com   0 Store Reviews   $21.75 Go to Store Hydor THEO Heater Anti-Shock Shatterproof 300w / 300 W If this item doesn't belong here, click Remove and help us keep our results accurate.   eBay   3 Store Reviews   $21.98 Go to Store THEO Heater - 300W - UL Listed - 15 1/2 in. - up to 80 Gallon If this item doesn't belong here, click Remove and help us keep our results accurate.   That Fish Place That Pet Place   3 Store Reviews   $21.99 Go to Store Hydor Theo Heater 300 watt for Aquariums If this item doesn't belong here, click Remove and help us keep our results accurate.   Drs. Foster and Smith   7 Store Reviews   $22.09 Go to Store Hydor Heater THEO UL 300 Watt If this item doesn't belong here, click Remove and help us keep our results accurate.   Aloha Aquariums   0 Store Reviews   $22.99 Go to Store Hydor THEO 300 Watt Heater If this item doesn't belong here, click Remove and help us keep our results accurate.   Gulf Aquaria   1 Store Reviews   $23.95 Go to Store Hydor Theo Submersible Heater-300 Watt If this item doesn't belong here, click Remove and help us keep our results accurate.   Big Al's Online   0 Store Reviews   $23.99 Go to Store Hydor Theo 300 Watt Heater If this item doesn't belong here, click Remove and help us keep our results accurate.   Amazon.com   1 Store Reviews   $24.06 Go to Store Hydor THEO Heater 300 Watt If this item doesn't belong here, click Remove and help us keep our results accurate.   Amazon.com   1 Store Reviews   $25.42 Go to Store HYDOR USA INC - THEO 300 WATT SUBMERSIBLE SHATTERPROOF HEATER 15.5" If this item doesn't belong here, click Remove and help us keep our results accurate.   Aquarium Garden   0 Store Reviews   $25.99 Go to Store Hydor Theo 300 Watt Heater If this item doesn't belong here, click Remove and help us keep our results accurate.   Allpetdepot.com   0 Store Reviews   $26.49 Go to Store Hydor THEO Heater 300 Watt If this item doesn't belong here, click Remove and help us keep our results accurate.   Fishy Business   0 Store Reviews   $26.99 Go to Store Theo 300 Watt Heater For Aquariums If this item doesn't belong here, click Remove and help us keep our results accurate.   eBay   3 Store Reviews   $27 Go to Store Theo Shatter-proof Aquarium Heater / Size (300 Watt) If this item doesn't belong here, click Remove and help us keep our results accurate.   GregRobert Pet Supplies   0 Store Reviews   $27.05 Go to Store Theo 300 Watt Heater For Aquariums If this item doesn't belong here, click Remove and help us keep our results accurate.   eBay   3 Store Reviews   $27.51 Go to Store Hydor Theo 300w Heater If this item doesn't belong here, click Remove and help us keep our results accurate.   Aqua Buys   2 Store Reviews   $27.99 Go to Store Hydor Theo 300 Watt UL Listed Submersible Aquarium Heater If this item doesn't belong here, click Remove and help us keep our results accurate.   onlinepetdepot.com   0 Store Reviews   $29.75 Go to Store Hydor THEO 300W SUBMERS HEATER If this item doesn't belong here, click Remove and help us keep our results accurate.   Pets Warehouse   0 Store Reviews   $29.76 Go to Store HYDOR THEO 300 wt submersible fish 75 gal tank HEATER If this item doesn't belong here, click Remove and help us keep our results accurate.   eBay   3 Store Reviews   $29.99 Go to Store Hydor THEO Heater 300 Watt If this item doesn't belong here, click Remove and help us keep our results accurate.   eBay   3 Store Reviews   $29.99 Go to Store Hydor THEO Heater 300 Watt If this item doesn't belong here, click Remove and help us keep our results accurate.   MarineDepot.com   5 Store Reviews   $29.99 Go to Store Hydor Usa Inc Theo 300W Submers Heater If this item doesn't belong here, click Remove and help us keep our results accurate.   SHOP.COM   0 Store Reviews   $30.46 Go to Store Theo 300 Watt Submersible Shatterproof Heater 15.5" If this item doesn't belong here, click Remove and help us keep our results accurate.   AllPetMall.com   0 Store Reviews   $30.87 Go to Store Theo 300 Watt Submersible Shatterproof Heater 15.5" If this item doesn't belong here, click Remove and help us keep our results accurate.   AllPetMall.com   0 Store Reviews   $30.87 Go to Store Hydor THEO Fish Tank Aquarium Heater 300W Up to 80 gal If this item doesn't belong here, click Remove and help us keep our results accurate.   eBay   3 Store Reviews   $30.95 Go to Store HYDOR THEO HEATER 300W If this item doesn't belong here, click Remove and help us keep our results accurate.   Aquarium Center   0 Store Reviews   $30.99 Go to Store Hydor Usa 300 Watt Theo Ul Heater If this item doesn't belong here, click Remove and help us keep our results accurate.   StrictlyPetSupplies.com   0 Store Reviews   $33.07 Go to Store Theo Shatterproof Heater, 300W If this item doesn't belong here, click Remove and help us keep our results accurate.   Aubuchon Hardware   0 Store Reviews   $35.49 Go to Store NEW Hydor USA Inc Theo 300W Submers Heater If this item doesn't belong here, click Remove and help us keep our results accurate.   eBay   3 Store Reviews   $36.97 Go to Store HYDOR THEO 300W SUBMERS HEATER If this item doesn't belong here, click Remove and help us keep our results accurate.   Peticious.com   6 Store Reviews   $37.33 Go to Store Hydor Theo Shatterproof Heater 300 Watt - T11402 If this item doesn't belong here, click Remove and help us keep our results accurate.   Underbid   0 Store Reviews   $37.71 Go to Store THEO HEATER 300WATT UL 24 I#038011 If this item doesn't belong here, click Remove and help us keep our results accurate.   Bottings Online   0 Store Reviews   $39.79 Go to Store Hydor Theo Heater: 300 watt INLINE HEATER If this item doesn't belong here, click Remove and help us keep our results accurate.   eBay (auction)   3 Store Reviews   $39.99 Go to Store Hydor Theo Submersible Heater 300 Watt If this item doesn't belong here, click Remove and help us keep our results accurate.   eBay   3 Store Reviews   $41.99 Go to Store Theo 300 Watt Submersible Shatterproof Heater 15.5". If this item doesn't belong here, click Remove and help us keep our results accurate.   Pet Crossroads Pet Supplies   0 Store Reviews   $61.78 Go to Store 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