I think I came up with a compromise.
If I set up the system so that a couple tanks are together with a sump are sytems. Instead of having one big system, I would have several smaller systems that can be adjusted as required.
that way I can start them off in a hypo situation, then after a couple of weeks of hypo, raise the SG up to normal conditions over 2 or 3 days.
this way I can use the same tanks, and if people want the fish before the 2 week period, I can sell them understanding the need for a longer climatization.
This would increase the costs of the livestock a bit, but I think would be a good compromise between have a full QT system and a full sale System.
neal

:) I like it a lot.

Are you sure about being okay for the quick drop of fish into a tank with lower salinity and staying. I understand the concept for FW dips as that they are short duration and the fish can handle it for a bit and the parasites can't.

Like the idea of getting fish from you knowing that they are quarantined but I think we're asking a bit much from you. To correctly quarantine fish, each of your shipments would need to be isolated from the next, as you would be breaking the QT if adding more stock to the same tank say in a week or two. Also if something like ich did show up after a period, then the clock starts again for everything. Just can pull out the one fish that might show signs. Then there's the issue of sterilizing tanks between shippings plus running without substrate during.

Think as buyers we need to be responsible, plus then also you're not opening yourself up if your QT goes wrong.

Also have read one of the reasons LFS go low is to save salt.

actually according to some sites, a rapid drop is the most effective.
I know from personal experience that it doesn't appear to affect the fish.
As for the other concern..
when receiving a new shipment, I would move all of the fish that i had before the shipment around into the tanks that were at normal SG and then lower the SG in the receiving tanks.
neal