<a href=showthread.php?s=&postid=14628513#post14628513 target=_blank>Originally posted</a> by mouserusker
No offense, but in my opinion, floating the bag for 15 minutes is entirely inadequate for acclimatiing something as sensitive as a BTA. I used some airline tubing and a small valve to start a siphon and slowed it down to about 3 drips per second from my main tank to my BTA's shipping bag. When the bag got full, I'd dump half of it down the drain. I did this for about three hours, and then picked the nem up and put it in my tank. I would say, as kindly as possible, NEVER put shipping water in your main tank. Diseases and parasites are inevitable when doing this.
As for the deflating, mine does this sometimes at night and sometimes during the day. I think it's their way of "breathing" to expel old water and take in new. The brown stuff is most likely anemone poop.