I have a community tank with a 6" red severum, 4-5" eb acara, a festivum, chocolate cichlid and rio tapajos severum(all about 2.5"). I also have an albino bristlenose and a zebra pleco. They all get along well with the exception of my small festivum and rio tapajos bickering from time to time. I noticed this morning that my tank temp was was 89 degrees and saw that the heater on light indicator was on. The temp setting hasnt been moved. Its an intermittent heater so Im guessing it stayed on all night instead of actually working like its supposed to. Going to have to replace that today. However, I also noticed that my chocolate cichlid has a wound on his head. Not very large or deep, looks more like cuts. He has been very shy this morning. I can not get a good picture of it and I can't really tell if it's self inflicted or not. Have you guys ever seen aggressive from temperature spike? My question is, whats the best method for treating him? Melafix? salt? I do not have a quarantine tank at the moment. Mine started leaking. So I'll have to expose all my fish to what ever I decide. My other big question is will either hurt my zebra pleco? Payed way too much to take a chance on hurting it. I will post the best couple of pics of him that I could get.
Thanks in advance.

Thanks in advance.
