lol carrying bags of perlite on the subway...funny shit! definitely easier than hauling pumice or lava rock...that shit is heavy!
when I used to use roots 707, the perlite would always float to the top by the end of the cycle....sincerely, i'm not sure how you water, but unless you are watering extremely slowly you must have some floating pumice....I am pretty lazy/violent when I water, so I often get little pools of water on the surface that slowly seep through. when the water pools, the perlite floats, and then gets deposited on the surface as the water seeps in. this is how you end up with pots that look like kushkings
btw I love how active this thread is

lets keep 'er goin...
sincerely - why don't you think you can't have living worms in your 3 gallon pots? i've seen live red wigglers in my cloning solo cups before...