= Fish Only With Live Rock
Do NOT apologize for that ...
Some do the float successfully I personally like the drip method as it gives me a chance to observe the fish ... I use a dark bucket to "reduce" stress and then lights out in the tank all day after they are in ..
I have never heard of the release of ammonia unless your roomie is saying they pee themselfs which could be, I dont speak fish
Perhaps they are refering to the fish that can put out toxins ? I do not know ...
Temp is critical , but so is ph and other things as well ..
But I do know that I would not want the the fish store water in my system , to many unknowns such as medication , diseases etc....
With the drip the goal is to replace the "shipping" water 100% with your system water ... Sure a little may not make a diffrence and I am anal but I dont chance it .,..Now I have not bought any fish in a loooooooong while but I would still do it the same way .
With the drip you are acclimating to temp as well :p
Dripping is a slower way to adapt them to any changes at a bit slower pace ... it also sets you up for a small H20 change in the process that can be helpful as well JMHHO