Hi all,

Just got some new goldfish. My wife and I took our daughter to a
Japanese "summer festival" up in Chicago and my daughter "won" a
goldfish in a game there. Well, that meant a tank ("starter kit"
actually), food, and chlorine remover. Then my wife wanted us to get
some more fish so the one "won't be lonely" so we bought two more
(comets, about 1 1/2" long--the "prize" fish was similar size and
shape, but dark along the back, light along the sides and red/orange
in the belley).

Well, come to find out that the "tank" is way, way too small for three
goldfish (actually more "goldfish bowl" sized, just rectangular). So
it's off to the store today to pick up a more appropriate tank (a 29
gallon "starter kit" with filter, heater, hood and light, and
thermometer). I also picked up more chlorine remover, a set of water
test strips with individual pads to test pH, alkalinity, total
chlorine, total hardness, nitrite, and nitrate levels, and about 35
lbs of gravel.

So I set up the tank, fill it, test the water (pH between 7.8 and 8.4,
total alkalinity about 180 KH ppm, total chlorine 0, total Harness
about 150 GH ppm, nitrites 0, and nitrates 0), and start the filter
and pump running to let the system cycle for a few days before I move
the two remaining fish (the "prize" fish promptly died on us) into it.

Well the very evening I get it set up, my daughter (who is about 3
1/2) pours some of her milk, and some of a "yogurt drink" into the tank.

Is there anything I can do to fix this short of emptying the tank,
taking everything apart, and starting over?