Originally posted by zoocrazy
i'd add the sailfin 1st. in my own experience and w/ friends tanks, sailfins are the wimps of tangs. so adding it 1st your giving them a head start.
he shouldn't add both at all maybe one but not both, but if he wants both the best way to do it is adding them at the same time not one first and the other a few weeks down the road or even a few days.