Backup heater wattage suggestion?

[Notsolostfish]

Right now i run on my 200G 1000w hearer by helios my basement is unheated and old and it gets to 30% humidity and 62-60F in winter cold and i evaporate a lot. My helios hearers runs often and keep very tight temperature of 76.5-76.8F. But since the tank is over 2 years old. I want to buy backup equipments just in case something happens. They discontinued my 500w dual elements by helios for the 1000w. And they have 350w out of stock everywhere.

Theres brs one for 600w 300w each. Would that be sufficient for my situation for backup?

 

[Notsolostfish]

Bump

 

[Reef.]

If the tank has corals in it, especially sps, then you don’t want a drop of more than a few degrees, if no heaters are running the tank will drop to room temperature, so you are going to need a heater that would keep the temp stable, if your 1000w heater does that comfortably, then you could drop the wattage a little but you say the heat is “running often” which leads me to think the 1000w is about the correct wattage, so I don’t think you would want to go as low as 600w and definitely not 300w.
A backup is there for emergencies but still needs to be the same specs as the equipment it is replacing.

Remember too, the cost to run a 1000w and a 600w heater will be exactly the same to heat your tank, providing they both have the required wattage for the size of the tank, so unless the heaters are vastly different in cost to buy, I wouldn’t try and save a few bucks on it, better to have a heater that can keep the tank stable than an underpowered heater than isn’t.

 

[Subsea]

Right now i run on my 200G 1000w hearer by helios my basement is unheated and old and it gets to 30% humidity and 62-60F in winter cold and i evaporate a lot. My helios hearers runs often and keep very tight temperature of 76.5-76.8F. But since the tank is over 2 years old. I want to buy backup equipments just in case something happens. They discontinued my 500w dual elements by helios for the 1000w. And they have 350w out of stock everywhere.

Theres brs one for 600w 300w each. Would that be sufficient for my situation for backup?

A 30% humidity in your basement seems very low to me. Where do you live?

Because of evaporative cooling, I would maximize covering tank top with a canopy. Each pound of water evaporated results in 1000 BTU of cooling with 1G weighing about 8.5 lbs. So, for every gallon evaporated 8500 BTU of cooling happened to both air & water.