Some type of fungus growing in my coco

Seventh week of flowering. Temps have been rather high from low to mid nineties during lights on, around mid eighties with lights off(different tent in another room with in-line fan venting air out of room). Minor fungus gnat problem. Been spraying top of coco with light dish soap and water twice a day (while using neem oil once every two weeks. Other than that, ppm, pH on point.
 

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