You cannot kill them this small using only tap water so if i were you i'd go ahead and flush those baby's out with Ph adjusted water- no nutes - just to be on the safe side. and they'll be just fine i'm sure
![Smile :) :)](/styles/smilies/icon_smile.gif)
start feeding VERY carefully when the new growth looks healthy and growth picks up.
Tap water has nutes and micronutes in it. My water has an EC of 200ppm ( ec* 500)
Good luck with it mate.
Just let it sit for a few hours for any chlorine the water company may have added to evaporise. Or call your water company and ask if theres chlorine in your tap water