flame angel

[marknash]

so we left our lights off all night.. the cardinal an angel are both eating. except we noticed some white flecks all over the angels tail and fins..
i heard that its either lymphocytosis.. from poor water quality.. so i checked our parameters.. and everything is good.
so i think...im lead to believe that this is ich, or brokynella.. (not sure which one angels usually get)
hes eating and looks healthy ..swimming around and stuff..
Not sure what to do now.
thanks in advance for your input