The problem with this particular pest, is it inhabits the substrate and other hard surfaces to multiply much like ich but they are actual eggs and not cell divided like ich.
When using anything from the main tank you will also need to treat the QT for the parasite. If that is the case, hyposalinity can be just as effective against them. The reason I was suggesting the dip and then into the QT was in most cases if mild, that is all that will be needed. Avoiding the use of substances from the main tank would avoid possible futher treatments.
If you wish to use the water from the main tank and a pre-seeded
sponge filter, then skip the dip and just QT using hyposalinity. Either way though, you do need something for filtration and a simple sponge filter would be the easiest solution. If you have a spare HOB
or canister, they can aslo be used.