JGlidden

Noticed these inside tank. Looks like something hit and splattered inside tank. Wiped one with finger and it came off but looks to be growing where wasnt wiped. Is it algae? Two spots in picture to left of pickup tube.

Getting back into fish keeping and set up my 75 gallon for mbuna cichlids. Tank has been running about 4 weeks now with 11 Serpae tetras. Fish seem to be doing good, actually seem to be improving. One had 1/2 its tail missing and one eye when I got them home, the tail is filling in and eye area looks to be healed. All of the fins on the rest look to be filling in almost looking like long fins.