I have a planted 5 gallon cycled tank. In 3 1/2 days I'll be adding 10 shrimp. Last night I put a small nerite snail in there. The snail is the only critter and is doing great so far. But now I don't know what to do about the cycle. How should I keep the tank cycled until I get the shrimp? I've got some seeded filter material in another tank that I could add before adding the shrimp, but I don't want to lose the cycle completely in the next 3 1/2 days. Should I sprinkle some flake food in there to add a little ammonia? Any suggestions?