depending on the size of the tank i would go with normal water changes until they hatch then with small regular changes until they are 2cms or bigger.
I do daily 10% changes on my grow out tank to ensure everyone is happy and healthy!
_________________
Doug's Bristlenose eBook - The number one source of Bristlenose information and the most detailed breeding guide avaliable
3rd edition OUT NOW!!! LOADS OF ADDITION INFORMATION, PICS, DIAGRAMS AND BRISTLENOSE GOODNESS
GO TO www.keepingandbreedingbristlenose.com FOR YOUR COPY!!
Like my book - why not "Like" it on Facebook!
http://www.facebook.com/pages/Keeping-and-Breeding-Bristlenose-Catfish/142417842474993
Click here to vote for Bristlenose World