The eheim jager therm htr 150w says it is fully submersible. it doesn't fit (the water!) to min fill line. put under horizontally?
1240642
Yes you can submerge them horizontally, I usually suction them to the sump wall for good water circulation around it.
1240643
As long as it is totally under the water you can put it horizontally, diagonally or vertically.
1240644
It can be put in horizontally with no problems! One has to be cautious though; the length is pretty long and may not even fit horizontally in all sumps.
703234
Fully submersible. Ignore the other answer. Mine has been fully under water for over a month and continues to work fine
1540423
Yes. This can be submersed in gas. Rated for inside and outside of gas tank.
721948
If you retain air inside it after sealing it closed... it is supposed to be completely submerseable for underwater shots... I never used it for that. I used it in the Peruvian Amazon to per event humidity damage. It was a little difficult to use though.
703431
Submersible heaters can be used either vertically or horizontally. For a couple inches of water, you would install it horizontally. But depending on how much water it is heating, you might want to use a heater with lower wattage, like 25 watts.
624707
Yes the tank will work in a horizontal position. It is actually easier to fill in the horizontal position.Jon
2107325
I don't know for sure, but it seems that it is somewhat water tight so that it wouldn't ruin the unit.
1546385
After looking up the IP rating system for this item, I would not recommend submerging it. It is only rated to a 5 and for submersion it would need to be an 8.
1829262
It needs to be entirely submerged (except for the power chord). The instructions warn about letting the water get below the heating element which can cause damage.
557677
I don't know about submerging it. To place it in fluid is ok because that is how you check the calibrations in hot and cold. I hope this helps. Jim
1448319
Yes it is fully submersible. I haven't had mine for too long bit it works great. I have it in a 60 gallon tank and it keeps it at exactly the temp I need
127782
The heater can be put in the tank sideways. It doesn't have to be upright. The knob controls how warm you want the water. Mine keeps it to within 1/2 degree. Mine is completely submersible.
1246788
Yes, it should be fine buried under the gravel provided you have a thermometer, which you really must have no matter where you place it. Heat rises, so placing it on the bottom probably is the most efficient, meaning it will get the tank as warm as is possible. If it is too warm, raise the heater up nearer the surface and increase or add some water movement. If it's still too warm, you need to put it on a timer, an external thermostat, or purchase a lower wattage heater. The 'water line' indicated on this heater is to insure it is well submerged, not to indicate that any part needs to be above the water. The heater is 100% submersible, it can and should be completely underwater. Yes, it should be fine buried under the gravel provided you have a thermometer, which you really must have no matter where you place it. Heat rises, so placing it on the bottom probably is the most efficient, meaning it will get the tank as warm as is possible. If it is too warm, raise the heater up nearer the surface and increase or add some water movement. If it's still too warm, you need to put it on a timer, an external thermostat, or purchase a lower wattage heater. The 'water line' indicated on this heater is to insure it is well submerged, not to indicate that any part needs to be... » Read More Yes, it should be fine buried under the gravel provided you have a thermometer, which you really must have no matter where you place it. Heat rises, so placing it on the bottom probably is the most efficient, meaning it will get the tank as warm as is possible. If it is too warm, raise the heater up nearer the surface and increase or add some water movement. If it's still too warm, you need to put it on a timer, an external thermostat, or purchase a lower wattage heater. The 'water line' indicated on this heater is to insure it is well submerged, not to indicate that any part needs to be above the water. The heater is 100% submersible, it can and should be completely underwater. « Show Less
1558405
It is not designed to be mounted inside the furnace so I don't think it is submersible. You may want to check directlly with the company though.
90038
Hydor 25W Submersible Glass Aquarium Heater - Original Theo I hear this is a great adjustable heater. how big is the spot in the back cause im not sure it'll fit
384365
Ours is never completely submerged, because the float triggers the motor before it gets covered with water. I don't know how it would work if it were completely submerged. It would have to be vertical, though, for the float to work.
1295210
My experience is it must remain submerged. This heater has failed at this point for me anyway. So I would suggest another brand or style. Mine didn't last very long. I am now using an adjustable version. Aquatop GH150 Aquarium Submersible Glass Heater, 150-Watt. And it works great. Lets hope it last longer.