@rygh and
@sfsuphysics thank you for helping (u guys are the best) but let me clarify a bit.
- First of all I want to QT my fish. In past I have lost two designer clown fish and wrasses to ich and other parasites. So I am all for it. Infact I have setup a 10 gallon tank next to the sump for that purpose.
- I will be travelling during holidays and will be gone for 5 weeks so I wanted to plan ahead. I am in no rush to add fish. For the very same reason I only started the top section without sump (so worse case salinity will swing but I have a friend who can fill in ATO container once every 10 days).
So at this point I have two option.
1. Do gost feeding to keep up with Ammonia source for live bacteria.
2. Add a fish with auto feeder and hope for best case.
If I choose second option I will have to QT the fish first. I was thinking that once my DT is cycled I will transfer some water to 10 gallon and use that for QTing the fish while gost feeding the DT.
Bascially, I want to keep the DT in pristine considition and I will start adding my LiveStock in Jan 2020. I could have started the tank after my holidays but then would loose time for tank to get mature.
Sorry for the long post.