Ok so i still got those 4 tiger barbs and that 1 cory in my 2.5g tank and ive noticed that water is cloudy and there are these REALLY teny tiny white/cream bugs on the black rock i got and come on the glass. Are those the bacteria that i need when cycling a tank? Cause i never really cycled my tank before i got the fish ( newbie ). Can someone please tell me what the heck they are?