to be honest, I use tupperware containers, not bags (I don't have bags) and I bag them individually. A couple hours shouldn't be too bad, just be sure to make setting up your tank priority when you move. If you can, keep 50% of the old water so that it's like the tank just got a 50% water change. Put some slime coat help once you move them to the new house. I really don't know about fry though, and despite all you do, they still might not make it. Just make it as stress free as you can. Same temp, same set up, darkness, try not to jostle them. You don't have to have Meth.Blue help with oxygenation which won't be a problem for such a short trip. You can also set up a temp tub in the new house with just the filter going if it's going to take a while for your tank to get set up. Sorry I'm not much more help and good luck.
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