temperatures spiking

[Foster]

Posting here since my phones internet doesn't care to navigate through this place that well...

I have one heater on my piranha tank right now and the temps at 86. I never had it that hot even with two before I moved. I believe its a 350 watt running its turned to low. I tried switching them and they are both skyrocketing the temp. The house is only around 65-70 degrees so going without anything drops the temp too much. I did add a powerhead and change the rocks but I can't see either of those making a difference.

Halp

 

[dovii84]

Busted heater? Try getting a Viaaqua I've had mine for 5 years and it's still hasn't failed me yet. It also keeps it at a plus or minus 1 degree.

http://www.marinedepot.com/ViaAqua_..._Heaters-ViaAqua-VA1155-FIHTTH-VA1163-vi.html

 

[PostalPenguin]

I'd unplug the heaters and do a water change with colder water. Sounds like the heater(s) are busted

 

[ballinouttacntrol]

86 won't hurt your piranhas...i've upped it around there for treatment a couple of times so no need to do a cooler water change. Looks like you're looking for a new heater though. Mine spiked up to 90 when they shattered the glass on mine once.