nor should you think about going skimmerless in a nano...
you want a powerful filter that will make up for the fact that
you have virtually no buffering capacity in a nano, so that if things go south, you can clean it up quick.
been doing nanos for over 10 years now, skimmerless and with skimmers.
also, all of the skimmers designed for use inside an AIO are mostly shyte...
i doubt the aquatic life skimmer will fit in your AIO, the tunze 9002 might...
i know hydor has some new internal nano skimmer, but havent seen it for sale yet.
can you measure and post what space you have to accomodate a skimmer??
your best bet is to use a hob skimmer, but not doable if your using a stock hood over your aio.
btw...is that sylva in your sig??? looks like it... that guy is insane....lol