Heater placement

[jemzam]

Where would be the best area to place a heater in my 70 gallon tank?

In the sump or in the display tank? Any recommendations on a great heater?

[nikon187]

sump, less clutter in the display.

[jon99]

sump in an area with decent flow

[spleify]

Sump for sure.

[thegrun]

+1 on the sump, there must be something better to look at in your display!

[Aquarist007]

sump but make sure you take the system temperature from the display tank.

[dwd5813]

<a href=showthread.php?s=&postid=14404265#post14404265 target=_blank>Originally posted</a> by capn_hylinur
sump but make sure you take the system temperature from the display tank.

+1, and make sure the heater is rated for the total system volume, not just display.

[stricknine]

Also a good idea to go with two smaller heaters than 1 large---in case there is trouble with one of them you want it small enough not to cause too much problems if it overheats or sticks on, and have a back up if one decides to fail.IMHO

[Playa-1]

I would split your heating needs between two smaller heaters. Place one in the sump and one in the DT.

[Whys]

Also note, not all heaters are fully submersible, but some are.

2 instead of 1 is a good idea for several reasons.