Keep them covered and in the shade until they are large enough to be watered from the top instead of the bottom
Zip lock bags make good growing enviroments it keeps them moist and bug free

Phee, I also live in Aust. and am also doing a bit of dabbling with brom. seed. I am by no means as experienced as some of our friends here on the forum but I have had reasonable results by growing my seeds on damp coco-peat in re-cycled Chinese take-a-way food containers with the lid on.
I add enough coco-peat to make it one third of the depth of the container, put the seed on top of the coco-peat and then bed it down by spraying with water. I then fit the lid and give them no more water. I find they can go up to twelve months with just what's within the container.
I then place the container/s on a shelf in an enclosed porch which faces north. (The shelf is resonably high up so they don't get direct sunlight). I have germinated Guz. Sanguinea in this way and they are now transplanted out and are about 1" high. But I did find them very, very slow compared to Neoregelias.
I obtained some other Guz. seed from a seed bank but had no success at all, maybe I was just lucky the first time or maybe the seed was old, who knows? One thing I have learned is that the seed must be as fresh as you can get it as it deteriorates quickly.
If you have any excess seed I would be happy to buy some from you as I get a lot of enjoyment growing broms from seed and Guz. seeds are pretty scarce down here. Hope this helps, All the best, Nev

Thank you both for the tips. :-)

Nev, I'd be happy to send you some. A couple more seed pods have just burst open, so they don't get much fresher than that, do they? ;-) Email me at joannmcconnell@optushome.com.au to give me your address.