he will bring in velvet, killing all the fish/seriously this is a risk we aren't discussing enough here in your thread
fish disease preps can't be skipped: see this forum for impacts:
A forum for discussing treatment and diagnosing saltwater reef fish.
www.reef2reef.com
the fish you added were already going down that path in a few months without the addition of the clown
those fish packed in a nano will bring it on even faster than the regular rates shown above, because that's cramped quarters on low quality feed skipping fallow and quarantine. -dry food is low quality / contrasted to hand prepared food they discuss in the disease forum/Paul B etc. this cumulative effect stresses the fish in a few mos after setup=disease
it's not mean to remind new keepers they can't skip fish disease even if it's inconvenient...it's mean to the fish to skip the preps. once fish disease preps are no longer required, action in that thread will nearly cease. its the busiest forum on the site due to the rate of people skipping preps due to inconvenience