I saw a lady's tank who had no heater, the halides heated the tank i the day time and the tank would cool to in the high 60'sF in the winter at night. It was one of the nicest sps tanks i have ever seen.
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360 gallon sps reef, 180 gal sump, bubble king supermarine 300, 4xmp40Wes, 2 x 6215 tunze waveboxes, 4 ghl mitras
360 Reef Tank
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