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Old 01/14/2019, 10:09 AM   #6
mcgyvr
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Join Date: Sep 2003
Location: North Carolina
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78-65 = 13F
For that you likely need ~4-5x water volume in heater wattage..
So for a 50G tank you likely need 200-250 watts of heaters to keep that stable enough and heat it up in a relatively short time so the heaters aren't constantly running..

Usually about 3x is sufficient for a 7-10 deg ambient difference..

Can you get by with less.. Sure.. It will just take longer to heat it up and may not reach the desired temp..


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