I think I got too big of a heater

Zarich

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I have a 20 long, and I bought a 150w at amazon. The heater is so long it pratically touches the substrate, but it is also full submersible. However, reading the directions it now appears I only needed 100w. Should I return this and get a smaller one?
 

Fashooga

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I just be careful of the water temprature. Adjust when needed. If you can keep it at a certain range where your fish is comfy than keep it. The hotter the tank gets the more oxygen you'll need. So be prepared.

Also you should stick it diagnoally if it's too long.
 
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Zarich

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Instructions say vertical, but also say fully sumbersible, so I am not sure.. it fits, but doesn't give me much wiggle room. It is right at the bottom within 1/2" of the substrate.
 

CatfishJack

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I think its probably fine. The thermostat in it should keep it from overheating your water. If its like most submersibles you can even have some of the top of it sticking out some if you wanted/needed (it should have a minimum water level line you want to keep under the surface)
 

Eienna

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It should be fine that close to the bottom, yes.
 

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