Accidentally bought a 200 watt heater for a 29 gallon tank, will it be okay?

[biofish]

Exactly as it sounds. I meant to get a 100 or 150 watt. But will the 200 watt work all the same?

 

[Fishmanic]

200 watt heater would be fine in a 29 gallon tank. It just won't come on as often as a 100 watt heater would.

 

[WhistlingBadger]

Yep. I personally like to err on the big side for heaters. They seem to last longer if they don't have to work as hard.

 

[itiwhetu]

Bigger is better, in this case.

 

[Colin_T]

A heater that is too big for the tank will probably warm the water more than what the thermostat says, so monitor the temperature with a thermometer in the water.