One word. MOLD MOLD MOLD. Dont shampoo, it will just make it more damp. Empty tank, move tank, pull back carpet past the wet part. Tear up the padding, get an air compressor and air chuck and dry concrete, concrete holds moisture, use air chuck to help dry carpet, keep using fans and lean stand over and dry that completely, the bottom of the stand will have alot of water under it, go buy new padding after everything is dry, glue new padding "cut to fit area you tore up,back down. put carpet back down. You may also have to replace the carpet tack strips along the wall if they are saturated. By the way, any chance one of your fish could have knocked the filter out. My puffer got pissed once and broke the end of my spray bar on my XP3. Double secure it.