1 or 2 heaters

[HybridFinatic]

Setting up a 75 gallon. In your opinion. Should I go with two 150 watt filters or it doesn’t matter and just go with a single 300 watt. Some people on old random aquarium forum threads people recommend two for risks and reasons like one of them failing so the other one takes over and your tank doesn’t go cold or that it makes the temp more consistent throughout the tank. Was just going to go with a single 300 watt but I’m second guessing?

 

[jacktar]

In a 75 I have a 300 and 100... I find with the extra one the 300 does much less work and they are both hardly on. I'm also using the poly sheet in the pic as the tanks lid which really helps hold the heat in

 

[HybridFinatic]

Setting up a 75 gallon. In your opinion. Should I go with two 150 watt filters or it doesn’t matter and just go with a single 300 watt. Some people on old random aquarium forum threads people recommend two for risks and reasons like one of them failing so the other one takes over and your tank doesn’t go cold or that it makes the temp more consistent throughout the tank. Was just going to go with a single 300 watt but I’m second guessing?

Heaters* not filters lol

 

[kno4te]

I’d go with two for redundancy and if the area where the tank is has some fluctuating temps. Especially when fall/winter come along.

 

[HybridFinatic]

I’d go with two for redundancy and if the area where the tank is has some fluctuating temps. Especially when fall/winter come along.

Ok I will probably go this route if you say so. My idea is I didn't want unnecessary obstructions and crowding of things on the back of the tank and I wanted to see if this what other fishkeepers are really doing. Should be ok I guess if I put one on each side.

 

[duanes]

One of the most common ways heaters fail, is in the the "On" position, and when they do, they can cook the fish.
I prefer two smaller heaters for this reason. A lower voltage one will take more time to cook a tank if stuck "on" (giving you a chance to notice), and hopefully the other will cycle off.

 

[A201]

My lone 300w Ehiem Jager heater does a good job heating my 120 gal.
I don't worry about a heater simply going out. I keep a few spares on hand.
I fear a heater getting stuck in the "on" position. The solo 300w doesn't have quite enough heating power to boil the fish in a tank that size.

 

[HybridFinatic]

My lone 300w Ehiem Jager heater does a good job heating my 120 gal.
I don't worry about a heater simply going out. I keep a few spares on hand.
I fear a heater getting stuck in the "on" position. The solo 300w doesn't have quite enough heating power to boil the fish in a tank that size.

Makes sense. Thank you and duanes . Do you guys so think 150 is a good voltage for 2 heaters in my 75 gallon. Would 1x 150 watt and then 1x lower 100-125 watt be better.

 

[A201]

For a 75 gal. maybe one 200w heater in tank & a spare 200w in storage.

 

[duanes]

Makes sense. Thank you and duanes . Do you guys so think 150 is a good voltage for 2 heaters in my 75 gallon. Would 1x 150 watt and then 1x lower 100-125 watt be better.

What fish are you keeping?
And what is the temp gap between what these potential fish need, and room temp?
As an example, when I kept haitiensus and Alcolapia, I had a 10' temp gap, because haitiensus and Lake Natron cichlids like temps in the 80s, so I kept 3 x 200 was heaters in their 6 ft tank, room temp low 70s.
For Uruguayans, and northern Mexicans like H carpintus, room temp was fine year round.
For Lake Malawi cichlids, where the average lake temp is mid 70s, a single 150 watt heater was sufficient in winter,and I'd unplug most heaters in summer (except in the haitiensus tank).