if you change water then add fish, they're fine as long as they're not diseased which most pet store fish are
what I'd do is the water change for lowering algae feed, add a few pre quarantined fish and chart updates.
if quarantined fish aren't avail, when are they ever, then next best option is water change, stock the tank with common starter corals and cuc and allow it to mature a while. be feeding them and common maintenance water changes like normal and when ready, place the tank in fallow 80 days then add fish that you bought and quarantined at the end of the fallow period. though your tank can carry fish, there isn't a setting I'd add mixed pet store fish to a reef tank without fallow and qt. one way to make use of your ready tank after the water change is to add hardy corals, begin reefing and cuc and everything just shy of fish. before adding fish, have a fish disease plan in place that comes from the fish disease forums daily work.
what I'd do is the water change for lowering algae feed, add a few pre quarantined fish and chart updates.
if quarantined fish aren't avail, when are they ever, then next best option is water change, stock the tank with common starter corals and cuc and allow it to mature a while. be feeding them and common maintenance water changes like normal and when ready, place the tank in fallow 80 days then add fish that you bought and quarantined at the end of the fallow period. though your tank can carry fish, there isn't a setting I'd add mixed pet store fish to a reef tank without fallow and qt. one way to make use of your ready tank after the water change is to add hardy corals, begin reefing and cuc and everything just shy of fish. before adding fish, have a fish disease plan in place that comes from the fish disease forums daily work.