My dillemma: Two digital thermometers: A Coralife and an Aqua-Med Biotherm controller - They are between 3 and 4 F apart... What would you recommend to figure which one is right?
If there the ice is not completely melted, ain't the temperature should be around 32F?
All these cheapo digital thermometer are off a little. They are relatively precise, however, and this is what is important if you want a relatively constant temperature for your reef. Stability is more important that shooting for the "perfect" temperature accurately, IMHO.
