Does tank need to be completely filled for heat to reach a high temp.? In other words, can I fill it with half gal. to keep a 10 x 15 ft room warm?
1610572
No it doesn't need to be full. The more you fill it the longer it will run but will be the same heat no matter how full. A full tank heat a 40 x 70 home for 12 hours
1610573
No. The amount of fuel in the tank does not affect the unit's ability to reach a high temperature. The amount of fuel in the tank only dictates for how long the unit will run and produce heat.
1610574
The heater will reach its full output with a half gallon. But only expect about 4 to 5 hours runtime from it.
1610575
NO...as long as there is fuel in tank and resevoir, the wick will burn and produce heat at the setting you have made.
1333910
The bulb base is extremely hot, it's more of a safety concern than a heating issue for a tank, but at 2gal , I wouldn't be surprised if it heats your tank.
1261036
No and No. Depending on the size of the tank will influence the temp. When I had a smaller tank (<1 gal) I had it on a timer. I did 6 hours on, 1 hour off. That kept in the range I needed. The one I have now (about 1.5 gal), it keeps it at about 76-78
1974196
I don't know if that is answerable. Would depend on ambient temp and other factors. My guess is 1 or 2 feet max though. The aquarium heater I have in a 40 gallon tank is only 40 watts and it cycles on and off and can raise the temp 20 degrees above ambient I think without being on all the time. So for just 2.5 gallons I wouldn't think you would need very much @ 20 watts per foot.
1971814
55 gallons to 90 gallons. It is not suitable for a 10 gallon tank (as one reviewer mentioned). The heater is too long to fit in smaller tanks, and has far more wattage than needed for anything less than a 55 gallon.
843730
It's meant for a smaller tank. I found it made the water too warm and since you can not adjust it, I just took it out. I would try it for a ten gallon but keep an eye on the temp.
2176228
I really can't answer the question. I have a 16x24 foot garage and setting the heater on 1 and 1/2 it gets up to 70 degrees. So I don't have to set it that high. I really don't use it that often so I can't tell how a 20 lb. tank would last.
326588
No, I keep the top of mine out of the water so I can adjust the setting. I think it has to be in the water up to around the base of the top. It is a pretty good heater for my 5.5 gallon tank. Keeps a constant temperature.
2007390
It's fine, I use mine in a 55 Gal so you have plenty even if you decide to go to a bigger tank. Enjoy these are the best heaters.
864039
No make sure you set the temp up and let it sit in the tank 15 mins before you turn it on.
132764
Due to the nature of a thermostat operated heater, you cant really over-do it. I have a 12gal with this heater and it works great, yes it has to be completely submerged, but that is not a problem for me. I plan to upgrade to a larger tank, hence the overkill.... so if you might have a bigger tank someday, just get this one!
1261037
No and No. Depending on the size of the tank will influence the temp. When I had a smaller tank (&lt;1 gal) I had it on a timer. I did 6 hours on, 1 hour off. That kept in the range I needed. The one I have now (about 1.5 gal), it keeps it at about 76-78
344741
I would recommend finding some higher quality heater for your 300gal tank. You could find a 1000watt heater or just run 2 heaters
1560139
No. On average, a heated tank needs about 5 watts of heat per gallon, but bettas are tropical so 7.5 should be fine.
1295212
I have a half filled turtle tank. I bought this a few days ago. My digital thermostat is at opposite end of the tank. Yesterday I noticed it rose to 82 degrees. The water was pretty warm to my hand. This may have something to do with the heat lamps being on as well. I now monitor the thermostat regularly and turn the water heater off periodically.
1960198
i hav a 5 gal tank, but for a 20 gal i would say no ..u need a more powerful heater..but ok for a 10 gal.
1337614
it heats perfect in my 15 gallon tank and the temp reading is accurate because I have two temp gauges. Don't want the tank to get to hot and kill my fish.