[mdrury]

Well, I am moving into the final stages of setting up my 120 gallon pentagon aquarium which I would like to use to display a mixed reef. For now I will be using a 66 quart rubbermaid container for the sump and an Iwaki WMD 40RLXT as the return pump... I need to decide on what type and what wattage heater(s) I need. I am thinking of using several lower wattage heaters, thereby having a fail-safe incase one fails; but, I only have a limited number of electrical outlets installed under my stand. I am also considering using the titanium heaters as they won't shatter or explode if they overheat.

Now my question - How much wattage and how many heaters should I use to maintain the temperature around 78-80 F.?

[LowCel]

In my 90 gallon with a 29 sump (total volume 110 gallons) I am using a 300 watt heater and a 150 watt heater. I also recommend using a temperature controller which makes using two heaters very easy, it also keeps you from over heating your tank if one of your heaters ever decide to stick on......which they do, trust me.

[Reefland]

I use 2 Ebo-Jager heaters and have never had any problems with them; always been reliable. I hope to add a controller soon though for that extra ease of mind.

[mdrury]

What wattage are your heaters, Reefland?

[Reefland]

250 and 150.