Heater Popping

[irr0001]

I just got a heater a few weeks ago and lately have noticed that it clicks and pops, about on pop/second, when it turns on. Is this normal heater behavior?

[VWD]

I never notice one do that before, but it's been years since i used a heater. Did it do it from the start?

[crvz]

What heater is it (brand/model)? It could be thermal expansion, but it would cause me concern.

[Loverotties]

What kind is it?

[irr0001]

It's an Aqueon 150W. It didn't do it at first. I have had it for about two weeks and just noticed it a few nights ago when i couldn't fall asleep because of the clicking. I think i may unplug it and get a new one. That much electricity in a tank of water kind of worries me!!

[Hop]

Popping is probably bad. My heater on my FW tank clicks on and off enough that you can barely hear it, but even on really cold nights that is only a couple times an hour.

[aquawolf]

Is it clicking all of the time or only at night? If you are 100% sure it is the heater then I would definitely switch it out.

[irr0001]

I'm 100% sure it's the heater. I hear the clicking during the day but not as much because the light is on and the heater is on less. Looks like I'm making a LFS run tomorrow! Thanks for everyone's input!