Same problems i had with the fry saver nets that everyone has talked about already plus one more - I had a hundred angel fry in there and parents sucked every one of them out thru the netting which exploded the fry on the way thru. Not pretty.
A few months ago, I tried a dolphin fry saver from aquotix for gold occelatus fry. They survived for about 3-4 weeks then started dying off despite daily vacuuming of the bottom for uneaten live foods.
Now I put new fry in a 20L standalone tank which costs me just over $20 new from bigW or kmart or one of the chain petstores. Happy days.