Do you put the entire heater in the water or does the top part (the knob where you adjust the temp) have to be out of the water? I'm used to self adjusting heaters that go completely under water. I just bought a bigger aquarium so now I need a new heater. Do you put the entire heater in the water or does the top part (the knob where you adjust the temp) have to be out of the water? I'm used to self adjusting heaters that go completely under... » Read More Do you put the entire heater in the water or does the top part (the knob where you adjust the temp) have to be out of the water? I'm used to self adjusting heaters that go completely under water. I just bought a bigger aquarium so now I need a new heater. « Show Less
1417382
Yes Brittany, the complete heater is submersible. I have a 36 gallon corner aquarium and it is completely submersed. The entire unit as well as approximately 3 inches of the wire are under water. I've had it for about two months and it's working great!!! Good luck with yours!! :)
1417383
I just bought the 100 watt, and it is fully submersible. It has an all black outer casing, making it blend in to the background very nicely.
1417384
It can be either way. It is completely under water right at this time because when I cleaned the tank my Jack Dempsey got a little feisty when I tried to put the suction cups back on. So I left it. I personally like the top above the water level.
1417385
Both. You can fully submerge it or have the knob stick out. There is a minimum water level indicator.
1417386
You can do either, completely submerse or leave the selector dial out of the water...
1024861
Hi - I no longer have that heater - it broke when I was cleaning the aquarium. I was concerned about continuing to use a glass heater, so I use a different type now. As I recall, though, it was about 8 inches long (or so) and it did shut off when it reached the set temperature.
858712
how long does the temp stay that cold. If you are just trying to keep the tank from freezing up I would say yes. With temps reaching that low from time to time I would put another heater in there around fall time. So one heater does not have to work all the time. I hope this helps
1987005
Be careful putting water on top. I did it but you have to make sure there's water on it all the time. Same rules as a stove apply here.
349594
The reason your temp isn't going up in the tank is because there is no water movement in the pump chamber. The only way to remedy this is to punch small holes in the plastic tubing which runs from the pump to the outlet. This will get the water flowing inside the small chamber where you are keeping the heater.
1974894
I set the red pointer in the middle on the back you will see it if you turn it around, once that is set just turn the blue wheel to the temp you desire. Also, make sure you unplug it and then you can set it, don't do it while it is in the water and plugged in, it is not how you set this up. Once all the settings are done put it back into the tank and plug it in.
766738
It includes 2 clip-on suction cups that can mount anywhere on the body, and being submersible it can go most anywhere in the tank that has decent flow, as long as it is not in direct contact with something that shouldn't get hot. When on, the heater doesn't get so hot you can't touch it, so there isn't much of an issue with fish or decorations getting burned by it, but it does provide less intense heat and is a little longer than a glass heater of the same wattage, so if in doubt, get the next size up heater. You could easily mount this in a sump or overflow given it's big enough with enough water volume and flow to keep the temp stable and heater fully submerged. It includes 2 clip-on suction cups that can mount anywhere on the body, and being submersible it can go most anywhere in the tank that has decent flow, as long as it is not in direct contact with something that shouldn't get hot. When on, the heater doesn't get so hot you can't touch it, so there isn't much of an issue with fish or decorations getting burned by it, but it does provide less intense heat and is a little longer than a glass heater of the same wattage, so if in doubt, get the next size up heater. You could easily mount this in a sump or overflow given it's big enough with... » Read More It includes 2 clip-on suction cups that can mount anywhere on the body, and being submersible it can go most anywhere in the tank that has decent flow, as long as it is not in direct contact with something that shouldn't get hot. When on, the heater doesn't get so hot you can't touch it, so there isn't much of an issue with fish or decorations getting burned by it, but it does provide less intense heat and is a little longer than a glass heater of the same wattage, so if in doubt, get the next size up heater. You could easily mount this in a sump or overflow given it's big enough with enough water volume and flow to keep the temp stable and heater fully submerged. « Show Less
1407343
I had confusion with that also. My suggestion is to just ignor it and do not mess with it because using just the blue dial works great and the high low is not needed. Using the high low just complicates things until you have had some experience with the heater and you have already set the temprature with the blue dial. And once you have set the temprature with the blue dial you do not need to use the high low anyway.
1075814
It heats the water to about 10 degrees above the temperature in the room. If the temperature in your house is stable, you should have no problem, but if it goes up and down, like it does in my stupid dorm room, you might want to get a thermometer and monitor it. If it starts to go a little over, just unplug it. This is not at the fault of the heater, however, I love this little thing and have no complaints.
1951252
Off. Only need the heater if the ambient air temp is less than what you want your tank to be.
608763
When I used to have it (upgraded to a large tank so I don't have it anymore), it didn't get the bowl warm at all, just the water inside the bowl. Also I'm pretty sure the instructions said it must be fully submerged in water for use. If you want the one outside try checking out the reptile heating pads, those can be on outside.
1561992
The heater can be completely underwater so no fear of eletrecuting yourself. Yea you can put it at the bottom horizontally. I am doing that with mines in a 75g. So far it's been working great! Pretty stable and since I have the 300w in a 75g, it heats my tank to the desired temp quickly.
2030665
you can set temp where u want it at and leave it..whenever it reaches that temp the heater will turn off and back on when it needs to reach the temp that you set it for......basically...set it and leave it.
1436833
I did not know this till now. Anyway, my tank is 10 gals too. The heater is totally inside the tank but it's not always fully submersed, it's about 1" away from the water most of the time but so far, it works great.
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
454331
It heats the water to the desired temp. So it turns on "red light" when the degrees of the water is lower than the desired temp. If you set to 85F it will stay on until the temp of the water is 85F. However, I noticed it heats great but doesn't decide "temps" great. So I bought a Finnex Max-300 Digital Aquarium Heater Controller and the in-line heater will only turn on when my "much improved" controller tells it too. I have my controller set to 82F and my in-line set to 85F. So if the water is 81, my controller turns on power to the in-line, the water starts heating, and once the controller gets to 82F, it shuts off power to the in-line. I did this for "fault protection". I heard this in-line malfunctioned a couple of times, got stuck to 90F and never turned off. Fried all the fish in the water... Go get the Finnex Max-300 Digital Aquarium Heater Controller, you'll thank me later!
454332
Do you thermometer? at what temperature is your water?. Is because you have the water too hot, the heater has thermometer so it turn on when is needed.