Can you feed sea monkeys to goldfish?

I wouldn't use "Sea-monkeys" as they are expensive and you can't measure out exact numbers of eggs to put into the water. Get a large package of marine salt and some brine shrimp food (also found near the brine shrimp eggs) if you want to turn the shrimpo into pets, if not, I suppose you could let them die off, but that's a bit mean, since they are extremely cute and easily cared for. Get a hydrometer and follow the recommended salinity on the brine shrimp egg package for a few controls, make sure all the water is the same temp and quality (bottled is best, like a few gallons of distilled water) Then alter the salinity up and down for each new group, do maybe 3 bottles of each group (four groups would be best, as more 12 bottles is pretty hard to keep perfectly controlled) then you can record how many eggs hatch and how many of the zoea ultimately survive a certain period of time (2 weeks is a good goal, if you are feeding them of course) then you can see how specific salinity levels affect the survival rate and hatch rate of brine shrimp!

The Aquarium that comes with the kit's is large enough to safely hold around 75 monkeys, it can contain up to 100, but they generally are not happy and some may die. If your tank does have that many monkey's in it, you should use the large end of the spoon and just make sure the water is clear (not milky or green) before feeding again. You can "upgrade" your sea monkeys to a mansion home by doing the following: Get a 1/2 gallon goldfish bowl (the tank you get with most kits is about 02-04-081 gallon) or a 1 gallon goldfish bowl, do not go any larger, or your monkey's will be lost in the space!

If you do 1/2 gallon, get two kit's of instant life, the kit with just the three packets, the spoon and the magnifier, for 1 gallon, get 4 kits. You can also get a ceramic fishbowl castle, as something for the monkey's to do in such a large tank.