I just picked up the geophagus abalios that I've been waiting on for a long time. The tank has been cycling for a month and is already home to a school of black tetras which have been doing well. When I put the bag of abalios into the tank to acclimate the temperature, I realized that the tank has dropped to about 72 degrees and that my heater is no longer working. I've already ordered a new one on Amazon and it will come tomorrow. Do you think the Abalios will be ok at 72 until then, or should I run out and pick up a heater from Petco immediately?