I don't have SW
, only FW
& I don't have space to keep a QT tank set up all of the time so I bought a 10g tank on sale w/ a heater & HOB
filter, I set it up while I had new fish to QT, then disassembled it & put it away. My plan was to set up the filter on my 46g tank to keep a seeded filter but I need to get a power strip. I did not have a substrate but I did have some fake plants & a couple cave structures just because I thought the fish need a little something. If you have the tank set up all of the time you will need to add ammonia periodically to keep the BB alive.