Help identifying critters in my Nano!

[Volkoff]

Hi guys, I don't know if I'm posting this is in the right area, but I'll give this a shot! So, I pulled out the flash light at night and noticed different animals, I didn't even know I had :)
Here is an unknown snail:
http://i428.photobucket.com/albums/qq6/anthonybohuslav123/Mobile%20Uploads/20160218_010514_zpseh6b4qwu.jpg (http://s428.photobucket.com/user/anthonybohuslav123/media/Mobile%20Uploads/20160218_010514_zpseh6b4qwu.jpg.html)

Here is also a little bug that crawls around, I have spotted around 40 roughly, they are everywhere in the tank(10gallon)this picture is also from the biggest one I saw, it's roughly 1cm long :http://i428.photobucket.com/albums/qq6/anthonybohuslav123/Mobile%20Uploads/20160218_010255_zpsys7mszry.jpg (http://s428.photobucket.com/user/anthonybohuslav123/media/Mobile%20Uploads/20160218_010255_zpsys7mszry.jpg.html)

Last one, is these guys, I have counted approximately 5 of them here and there, these also seem to retract into its body:
http://i428.photobucket.com/albums/qq6/anthonybohuslav123/Mobile%20Uploads/20160218_010458_zpssirilkkn.jpg (http://s428.photobucket.com/user/anthonybohuslav123/media/Mobile%20Uploads/20160218_010458_zpssirilkkn.jpg.html)

If anyone could come up with something that would be accurate would be appreciated. I did look up on the hitchhiker identification places and never seem to find correct ones that look like the ones I have.

Thank you to whomever sheds light on this!
~Anthony

[HammerLover]

1st pic looks like a stomatella

2nd pic looks like a large pod, idk what :/ most pods in my tank were dot-ish but bigger pods do exist

3rd pic looks like a tiny feather duster

[MillerR.]

I think the third pic is aptasia.

[Craig 63]

+1 on the aiptasia
1st is a stomatella
Can't see the other (dodgy eyes)

[Volkoff]

3rd pic is definitely not aptaisia, it's an actual bug. I have stem of aptaisia in my tank!

[Volkoff]

Here is more pics of third one http://i428.photobucket.com/albums/qq6/anthonybohuslav123/Mobile%20Uploads/20160218_030919_zpsid9jrpts.jpg (http://s428.photobucket.com/user/anthonybohuslav123/media/Mobile%20Uploads/20160218_030919_zpsid9jrpts.jpg.html)
http://i428.photobucket.com/albums/qq6/anthonybohuslav123/Mobile%20Uploads/20160218_030915_zpskwuaceot.jpg (http://s428.photobucket.com/user/anthonybohuslav123/media/Mobile%20Uploads/20160218_030915_zpskwuaceot.jpg.html)

In the next image you'll see a white thing, it's a rock that the little guy sucked in and spat right back out afterwards!

http://i428.photobucket.com/albums/qq6/anthonybohuslav123/Mobile%20Uploads/20160218_030908_zpssrwrdggt.jpg (http://s428.photobucket.com/user/anthonybohuslav123/media/Mobile%20Uploads/20160218_030908_zpssrwrdggt.jpg.html)

[VirginiaMarine]

Pod and aiptasia, not sure about the first one.

[Craig 63]

Seeing the picture clearer the 3rd could one be a small tube anemone? Looking at the casing.

[Sully6768]

3rd looks like it could be some type of rock flower nem? Doesn't look like aiptasia to me.