"One disadvantage of freeze dried foods is that the freeze-drying process often strips vitamins from the food as well, so freeze dried foods are not likely to make a balanced and complete diet. Remember when feeding freeze-dried foods, that these foods can absorb a lot of water, and will fill up your fish a lot more than you would think when looking in the package. We recommend that you moisten freeze-dried foods before feeding them to your fish to keep your fish from overeating and making themselves sick."

Found this on Google...info site that wasn't trying to sell something.

Wendy