2 x 150w Jager heaters on my 67gallon controlled by the Apex.

There are also limited by the built in thermostats set at 80° just in case the apex goes wonky or I forget to put the temperature probe back in the water after cleaning it.
:redface:

Neo-Therm by Cobalt Aquatics. I have a 50w for my QT, and 2 75w for my display and for heating up water for water changes. Work great,a and I love how they aren't glass/are so slim!

Fluval

Jager heaters. I find they are very, very accurate.

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I run all Jagers right now
I use 9 between my DT, QT, NSW, ATO (I know, not needed) and a spare for acclimating

If I ever redo my sump, I'll look into titaniums for the DT

ive used almost all of these and all have crapped out excluding my titaniums. i have had them for a year or so and temp has never changed even when changing from different sized tanks.

I've got 6 Jager's between my QT, DT and SW mixing barrel and they've all stuck on now. I think the oldest one is about a year and a half old. Now they are all just mixing barrel heaters, lol. I have 3 Aqua heat ones in my DT tank now and they seem to be working ok, but they're not very old either. I guess time will tell.
There's been great participation in this poll, Thanks everyone!

I love the Aqueon Pro and I'll be replacing my Jagers with them over the summer.

The Finnex are nice but I don't know of any Canadian distributors.

I'll add this;
No submersible aquarium heater I've ever seen is 'totally' waterproof, besides titanium, and even some of them are not

I keep my heaters verticle and the seals out of the water ...
Only the glass is in the water and the control heads are dry

I have a couple of old Jager heaters that have moisture inside, so nothing is totally 'waterproof'

Reef supplies sells Finnex