as far as water movement,, i have built a carbon filter for air pump before that way u can keep water moving for ur fishies
i 1 inch diameter pvc pipe about 10 inches long filled with activated carbon will help absorb the chemicals. run the air line in one side and out the other, the tighter packed the better as the air has to seep past the carbon.
this way u can seal the tanks and keep fish alive
as for filters, stick em outside with some slightly ammoniated water in a garbage can and leave them running.. keep temps around 40-50 degrees and bacteria will keep on chuggin