Something else I just thought of. You really want to make sure that you don't cross contaminate from the QT to DT. I use a different net, siphon tube and small measure cups (that I use for feeding) for both systems. If I need to do work in the DT I do that first then do the work in the QT. I also just noticed in my picture that I didn't mention. I have a small filter/mesh bag filled with ceramic stones that holds beneficial bacteria. Usually I drop this bag in my sump/refugium so that it's colonized and then use it in the QT...but never back.
I know all this adds a bit of cost but when I think of all the $ and more importantly time and care, I spent on my DT and with each addition the chance of endangering the DT the $ make great sense.
Steve
Hey Steve - a few weeks ago, I bought a 10 gallon QT. I want to set it up but I have a question. How long it takes to colonize the ceramic stones? It isn't a dip and go type of thing, right? Should I leave the mesh bag in the sump for a few days? Weeks?
Thanks.