Longest Possible Safe FW Dip?

[rastaangel]

To date I have lost 2 achilles, 2 purples, a yellow, a powder blue and a hippo tang in QT, they were the only deaths in the QT all other fish survived. I have always gone to extreme lenghts to stop any parasites in my DT and QT every fish for 3 weeks min but as you can see from my list thats alot of dead fish and lotsa gone money...
So my question is how many of you just FW dip a fish then drop it into your display? How long do you dip? I have always done a 5 min dip before they go into the QT, but I have read anything less then 20-25 min or until the fish is in danger isnt doing a good enough job...
IF I decide to pick up another tang that would be my plan of attack

[jorjef]

Just curious, how big is your QT tank and is it just an empty glass box or is there some PVC etc. for fish to take cover in ? Again just curious not implying anything..

[rastaangel]

40g QT with lotsa hidding places, both PVC and chisled out dead rock. All of those tangs were seperate occasions, never at the same time. I have never had more then 3-5 fish in QT at once

[fishoholic]

The longest FW dip I did was 7min, then it looked like it was going to kill my fish so I pulled him out quick. 5min in a FW dip is a long time for a SW fish IMO.

[rayjay]

I dip the seahorses for 12 minutes unless they become completely unresponsive to touching them.
For other fish I've not had to do any since I got into seahorses so I don't know if they can go that long.

[Funky_Fish14]

I've seen a yellow tang in FW tank for 30 mins once. Have frequently seen FW dip of 10-20 mins.