Quarantine - How long to wait before Meds

[PlaneFishGuy]

How long should I let new fish settle into quarantine tank before giving the "Med-Trio" or is it ok to start right away? 

[Fish Folk]

5 minutes ago, PlaneFishGuy said:

How long should I let new fish settle into quarantine tank before giving the "Med-Trio" or is it ok to start right away? 

I'd look to see how Aquarium Co Op does it in store. You can skip ahead to 15:00 in this video to see how it's administered:

 

[Emika_B]

PlaneFishGuy - I’ve done new fish quarantine two times now.  Each time I tested the water before because the meds can make water testing unreliable.

The first time, I started the meds the next day.  It went smoothly but I lost 7 out of 9 guppies over the full course of quarantine.  These were dwarf neon rainbows from Shop A and guppies from Shop B.  I don’t know why the guppies went south - they looked good at the store and showed no outward signs of disease or distress.

The second time, I did the same but one of the two schools of fish was dropping like flies.  Not knowing if it was a water issue or a fish issue (I believe it was a fish issue), I did a full water change.  Over about four days I lost all but one of the school of rummy nose tetras.  These were rummy nose tetras and dwarf neon rainbows from Shop C.

The second and a half time (the Shop C rainbows still needed to quarantine), I picked up another school of rummies but from Shop A.  This time I waited about a week before starting the meds.  They’ve all survived the 10 day soak and are now on the two-week feeding and observing period.

Long story short - I really think it will depend on the quality of your fish.  If they’re questionable, give them a few days of observation.  If you’re getting them from a reputable shop you could probably start right way.  I think going forward, for myself, I’ll give them a few days of observation, then start the meds.