I just set up my first quarantine tank for a pair of percs I wanted to add. I bought a "kit" from my LFS
that consisted of a 10Gal tank, HOB
filter, hood w/ light, heater and thermometer. A lot of people reccomend 20Gal for there quarantine tanks, I used a 10 because I needed something relatively small. I ran the HOB
filter in my main system for 2 weeks to build up the bacteria. Lighting isn't imporatnt for a FO
tank, I haven't even plugged the lamp in yet, the tank is in my kitchen so it gets plenty of room light.
I did not quarantine my 7 chromis or the bar goby I added. However from the clowns on I will be quarantining all new additions. I realized last night in addition to protecting against disease it will also insure I take my time stocking the tank, 4 weeks between additions.
have 1 central system, its probobly the cheapest solution but it leads to disease. As long as the fish look healthy and dont stay very long then the LFS
can still sell them, if they lose a few its not going to kill there profits.
run a system for each of there tanks, its more expensive but it protects against disease.