I have 7 albino cory cats, 1 gold gourami, 1 blue gourami, 1 dwarf gourami, 2 mollies, 2 flagfish, 2 mickey mouse, a bamboo shrimp, 3 Nerita Snails, gold nugget pleco, bulldog pleco, and until today a bristlenose pleco( , he has passed for unknown reason) I noticed these white spots underneath the driftwood that has been in tank for over a month, I have no idea what they could be, should I take it out??