I found some in my tank about a month ago. I then left them alone because I was being lazy and I did not have a needle. I have been trying t use the kalk paste method, but at this point there are little POS all over the place. Man oh man, I wish my BTA would split like this.
Some of them I have hit 3-4 times and they seem to grow. Damn them.
This headache all because I let someone store a piece of rock in my tank for a week. Last time I will ever be nice. lol