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Old 04-10-2013, 09:34 AM   #1
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Marina 200w heater

I have one of these for my 40g breeder Mbuna tank and it seems very inconsistent. I set it to 79 and it seemed to work fine at first. Then the temperature spiked up to 86 on my probe thermometer (even got a second one to confirm the right temp). I lowered the heater setting to 75 and the water still shows a temp of about 81-82. Is 200w too much power for this size tank? I am new to keeping African cichlids...which is why I joined here...and would like to resolve this before my fish get cooked. No matter what I do I just can't seem to get the temp setting just right and it seems extremely unpredictable. The room is normal room temp so I don't think that is causing the problem so I am kinda stumped here. Any help would be great. Thanks.

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Old 04-10-2013, 06:32 PM   #2
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This is the exact reason I use a separate digital heater controller for each tank..... Maintains within 0.7F
Wanna calculate the cost of that new reef tank?? Take your worst nightmare, double it, and you're halfway there.
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eat, eater, heater

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