once placed in a home, the larvae grow quickly due to increased temp. i always replace water once a week w/ water from the very pond i retrieved the eggs from. make sure fresh water supply is the same temperature as water that the larvae are in as to not shock them. feeding is the part i dread because you need a constant supply of small prey items (brine shrimp, small inverts from a local pond, etc, ). salamander larvae have voracious appetites and will cannibalize one another on occasion.