There was a link on an international site somewhere with tons of useful stuff.. If only I'd bookmarked it
Anyways... What this Avic owner does (when they're still iddy-biddy slings) is place the enclosure in a moat of water and ventilates exceptionally well with lots of holes in the side of the enclosure.
I raised my A. versicolor from |__| <---- this big and I'll let you in on the best secret ever:
Go to Pick n' Pay, go to the section where they sell condiments, and buy yourself a toothpick holder (the transparent plastic one). This works like a charm, because it has one of them rotating lids where you move the lid from a few small holes to one big hole (like spice bottles).
Therefore, you can move it to the small holes for extra ventilation and move it to the one big hole to drop in baby crickets or roaches (just don't leave the lid in this position, or you'll have a Houdini on your hands). This keeps the webbing in place because you don't touch the main lid.
To poke the holes in the side, you'll need to heat up a needle using a candle and "melt" the holes.
Once the sling need rehousing, it will have passed the "SADS" stage - That's an acronym for Sudden Avic Death Syndrome in case you didn't know.
I hope this helps.