hitch hikers

So I got some frogbit few days ago and hadn’t noticed till now but there seems to be some free floating Moss or something like that attached to the roots. I’m sure I can just pull it out and let it grow in a corner of my tank ?? Can someone please help me identify what plant this and if its safe...

Yeah... I got that plant I was talking about and I seem to have a snail explosion of what might be ramshorns, but Wiki says they're herms. I was fine, absolutely happy, with what looked like six of them before I siphoned out poop and leftover food but... I think that 6 went down to 2 which is...