


THEO aquarium heater has all the necessary features for safe and precise temperature maintance of the water in your tank. The exclusive technology and the high quality of the components guarantee a long lasting product.
More information available in FAQ, forum and instruction.






220/240V ~ 50/60Hz • 115V ~ 60Hz | ||||
TYPE | LENGTH | AQUARIUMS | ||
cm | in | l | gal | |
THEO 25W | 17.8 | 7 | 10/25 l | 2/7 gal |
THEO 50W | 17.8 | 7 | 20/50 l | 5/14 gal |
THEO 100W | 22.6 | 8.9 | 50/100 l | 14/26 gal |
THEO 150W | 30.6 | 12 | 90/150 l | 23/40 gal |
THEO 200W | 30.6 | 12 | 100/200 l | 26/53 gal |
THEO 300W | 39.4 | 15.5 | 200/300 l | 53/80 gal |
THEO 400W | 39.4 | 15.5 | 300/400 l | 80/105 gal |
TYPE | STD CODE | UK CODE | USA CODE |
THEO 25W | T11700 | T11704 | T11702 |
THEO 50W | T11100 | T11104 | T11102 |
THEO 100W | T11200 | T11204 | T11202 |
THEO150W | T11600 | T11604 | T11602 |
THEO 200W | T11300 | T11304 | T11302 |
THEO 300W | T11400 | T11404 | T11402 |
THEO 400W | not available | T11502 | |