Al, I would definitely agree that you need to be a lot more careful with things like sea stars... but honestly, I've done it both ways with brittles and had a TON more success floating them, too. Now please note, I was a lot more careful about very slowly adding the water with the brittles than I was with the fish, of course. I'm talking 4 or 5 hours of a teaspoon every 20 minutes or so. The reason I liked this way better didn't even really have to do with the temperature (although I'm sure that was one added advantage). Actually, it was just a lot less traumatic on the brittles to not have to move them into the main display. The first time when I drip acclimated them, I had a horrible time trying to get them into cups or nets to move to the display and they lost a few legs before it was all said and done. The second time, I just opened the bag and let them slide out when they were good & ready. No legs broken! Brittles are the only kind I've tried though, so I'm definitely no expert on acclimating stars... this is just what has worked best for me.