Brengun Posted June 27, 2012 Report Share Posted June 27, 2012 Not quite as important on the bristlenoses as they can take a bit of cooler water but some of the fancy L's do require quite warm water of 26-28C or some even more. With our weather turning lousy atm, please, check your heaters are actually heating. Twice this week I have caught heaters not working correctly and have had to replace them. I discovered it by putting my hand in the tank during feeding as the temps hadn't yet slipped into dangerous mode to set off the temperature alarms. Link to comment Share on other sites More sharing options...