I use a Via Aqua titanium heater with a remote set & temp probe Keeps my 90 g DT & 50 Sump @ 79 Degrees perfect it's totally submergible and only 9" long. There $45 @ J&L , I have a couple of extra's for $30 each. I run a 125 watt Eheim Jager as well as back up. Both heaters are great quality.
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Hey! I never "LEFT" the hobby, just doing fresh water now. Which is still listed as part of Canreef if I'm not mistaken. 
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