My chiller pump malfunctioned on Monday causing a temp spike in my 28 gallon nanocube- from my baseline of 79 degrees F to 87 degrees- not sure how long it was this warm, maybe less than 24 hours. I fixed the problem and gradually lowered the temp back over 6 hours with no apparent damage to any of my corals. This afternoon however when doing a water change I noticed mutiple smaller than pencil eraser white patches scattered on my orange monti cap. It is fairly high up in tank so was probably in the warmest water.The majority of color looks good otherwise, rest of parameters- alk- 8-9, Ca -420,SG 1.025. Could it be from temp spike?- I dont see any nudibranchs and rest of assorted SPS and LPS corals seem ok.