CRB Buy and Sell

Hello guys, I am a new member. I have a flowhive hive in Monash ACT. I recently lost my colony, and I am putting it down to my poor bees escaping from the varroa mite. I might be wrong but it makes sense to me. I have since done my homework as to what I should have done. I have destroyed the frames. I assume I have to wait to Spring before I can replace them? Look forward to advice, and actions I should have taken.

No need to rouse, I am feeling guilty enough.

Dave U.