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Patent pending PTC heating system to avoid damage in case of dry running. Precise temperature control. Shatter resistant glass tube protects heating element. Completely submergible.

25W – 2-7 Gallon tank
50W – 5-14 Gallon tank
100W – 14-26 Gallon tank
150W – 23-40 Gallon tank
200W – 26-53 Gallon tank
300W – 53-80 Gallon tank
400W – 80-105 Gallon tankMore

Hydor Theo Aquarium Heater

50% Recommend this to a friend (10 of 20)

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25W - Hydor Theo Heater
SKU: 202170
Earn 19 Reward Points
$19.99
Buy 3+ and save 6%
$18.99
 
 
 
50W - Hydor Theo Heater
SKU: 202171
Earn 22 Reward Points
$22.99
Buy 3+ and save 5%
$21.99
 
 
 
100W - Hydor Theo Heater
SKU: 202172
Earn 23 Reward Points
$23.99
Buy 3+ and save 5%
$22.99
 
 
 
150W - Hydor Theo Heater
SKU: 202173
Earn 24 Reward Points
$24.99
Buy 3+ and save 5%
$23.99
 
 
 
200W - Hydor Theo Heater
SKU: 202174
Earn 25 Reward Points
$25.99
Buy 3+ and save 4%
$24.99
 
 
 
300W - Hydor Theo Heater
SKU: 202175
Earn 29 Reward Points
$29.99
Buy 3+ and save 4%
$28.99
 
 
 
400W - Hydor Theo Heater
SKU: 202176
Earn 32 Reward Points
$32.99
Buy 3+ and save 4%
$31.99
 
 

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