Enriching Frozen Adult Brine Shrimps

Thats a good question... I know you can buy it enriched. Im not sure what the affects of thawing and re freezing would be. However, I refreeze all the time... so i don't see why it wouldn't work... I would be worried that when it thaws again the powder is just going to get washed off when it goes into the tank. hopefully there is someone who has had experience with this. im curious as well...

There are many supplements you can try. Here's some:

http://www.drsfostersmith.com/product/pet_supplies.cfm?c=3578+4245

Yeah, I'd just get some vitamin solution and use it to thaw the brine shrimp rather than using tank water. I know on The Puffer Forum some members highly recommend to use vitamin solution anyway, regardless of what you're feeding. I personally don't, but it wouldn't be a bad idea, IMHO.