heater failure

Tony44

Amphipod
M.A.S.C Club Member
#1
Is there a way to determine if a heater is about to die? Maybe we should post brand names and how long they lasted to develop a trend. I have a Aquarium Systems 300 watt that is least 4 yrs old and a Eheim 150 watt that is about 2 yrs old. Many yrs a go I found my freshwater tank doing a rolling boil. My other heaters that died just quit and the tank cooled off. I'm just getting a little nervous.
 

asn-naso

Dolphin
M.A.S.C Club Member
#2
I would caution eveyone to put their heater on a controller. I have had the thermostat break on a heater, and the heater then gets stuck on, and cooks your corals.
 

zombie

Dolphin
M.A.S.C Club Member
#3
^this. A heater is the most likely thing to crash your tank, so you should always include special precautions to prevent that. I always do the following.

1. Use 2 or more heaters to get the required wattage rather than 1 large one. Don't overdo the wattage. Use a calculator like this and try to stay just above the wattage to maintain temp. http://www.kernsanalysis.com/HeaterCalculator.cgi

2. Buy heaters with reliable thermostats and not the dial built into the thermostat body type.

3. Use a controller (apex, rk, ranco, etc) for primary heater control and set the thermostat a degree or two above normal tank temp as a backup. If the heater controller fails you will know because the temp will be higher than normal, but still a safe level that won't kill anything.

4. (Optional and only with aquarium controllers) Set the state so that in the event the aquarium controller loses communication with the power bars only half of the heaters can run off the native thermostat. Do the same in the event the temp probe falls out of the water or gets unplugged (If Temp < 70.0 Then OFF for apex).
 
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TheRealChrisBrown

Reef Shark
M.A.S.C Club Member
ex-officio
#4
I had a Catalina 1000w titanium heater controlled by my Apex for 18 months, searched my Amazon purchase history to find when I bought it. It died about a week ago. I replaced it with 2 x 800w Finnex titanium heaters. So far the new ones are doing a great job, I have the Apex maintaining a temp between 76 and 78. I now own a Petco 300w as a backup..... it will sit in a box in the basement until I need to call it into action again.
 

Irishman

Tang
M.A.S.C Club Member
#5
I think my heater may be going out. I'm pretty positive it has been on all day, tank temp is 2 degreees below normal range that I see it at. And when I stick my hand in the water and touch the heater I pretty much get nothing.

It isn't the only heater in my tank, I have on in my sump. But anyone else try these things to see if their heaters are dead or just throw them out?
 

zombie

Dolphin
M.A.S.C Club Member
#6
Irishman;369290 said:
I think my heater may be going out. I'm pretty positive it has been on all day, tank temp is 2 degreees below normal range that I see it at. And when I stick my hand in the water and touch the heater I pretty much get nothing.

It isn't the only heater in my tank, I have on in my sump. But anyone else try these things to see if their heaters are dead or just throw them out?
Bump the setpoint on that heater by 2 degrees and wait a minute or two. Does it feel warm?
 

Irishman

Tang
M.A.S.C Club Member
#7
Yea I'm sure its done for, raised it up and still didn't feel anything, which is really odd since the heater is only 6 months old. The digital and mercury thermostat have been two degrees below from what its normally at. Nothing has changed in my tank either.
 
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