Want to run 2 heaters

[Jblaine]

I currently have a 75 gallon aquarium with a 31 gallon sump. I have figured out I have roughly 90 of water between both and would like to run one heater in the sump and one in the DT. I am looking at the Bulk Reef Supply Titanium Aquarium Heater System and see that the 300w heater goes up to 100 gallons. Would I run a 300w in the sump and the display or should I choose a 300w for the DT and a different wattage for the sump?
Thanks
Jon

https://www.bulkreefsupply.com/300w-titanium-aquarium-heater-system-wifi-bulk-reef-supply.html

 

[Courtney Aldrich]

I would run both in the sump. 300 W for both are good. I keep a second heater as backup with the low set point about 0.2 degrees below the first heater (this way the backup heater only kicks on if the first heater is not working or is unable to adequately heat my tank).

 

[xxkenny90xx]

Unless your house is freezing 2 200w heaters will work just fine. Why do you want one of them in your display? Isn't one of the best things about a sump that it hides your equipment?

 

[Jblaine]

Unless your house is freezing 2 200w heaters will work just fine. Why do you want one of them in your display? Isn't one of the best things about a sump that it hides your equipment?

Unless your house is freezing 2 200w heaters will work just fine. Why do you want one of them in your display? Isn't one of the best things about a sump that it hides your equipment?

Thanks for the responses. The reason I’m thinking of running both is for consistent temps in sump and DT. Also I’m nervous that if I have only one in the sump, if something happens to the return pump, then the DT might get to cold. I’m just crazy like that I guess.

 

[Smokeshow]

I have a 75 with a 55g sump. About 110gal overall. I use 2‐300w heaters controlled by an inkbird controller. Tank is set to 78. The room varies from 63-70 depending if I'm home or not

 

[RobB'z Reef]

Thanks for the responses. The reason I’m thinking of running both is for consistent temps in sump and DT. Also I’m nervous that if I have only one in the sump, if something happens to the return pump, then the DT might get to cold. I’m just crazy like that I guess.

Put them both in your sump. Even so running two has advantages. Run two 200w for your tank size. For the cost of these, buy an extra one and put it on the shelf if you're worried about failures.

 

[xxkenny90xx]

Thanks for the responses. The reason I’m thinking of running both is for consistent temps in sump and DT. Also I’m nervous that if I have only one in the sump, if something happens to the return pump, then the DT might get to cold. I’m just crazy like that I guess.

That's good thinking, I just wouldn't want a visible heater/cord in my tank. And unless your house is freezing, having your return fail and your tank go to room temp for a bit shouldn't be a big deal.

Fwiw I am perfectly happy with 2 200w heaters in my 112g tank 40g sump system

 

[garbled]

Heaters in the display are often problematic, unless shielded from light. You have to clean them consistently, because the algae grows on them, and then bakes on. It's super obnoxious.

You'd be better off with 2 return pumps if you are worried about redundancy, than a heater in the display.

 

[John08007]

I don't know the exact wattages of mine but I have a small one in my sump, 300 watt in the overflow chamber of my dt. My tank is a 75g tall cube. Having the small one alone the temp would dip down too much in the winter.