Eel's in Sand?

[AlonelyCody]

I would like to put my eels in a take with sand. Would they do well with cichlid sand? Cichlid sand raises the pH to around 8.0 is that to high for my eels? I have a Tire Track and a Peacock eel. I have found a lot of info in the Tire Track eel, and from what i have found the highest pH that they can be in it 7.2 but i have had a hard time finding info in the Peacock. If not the cichlid sand. would other sand be ok? would it hurt them? I have read that the peacock will burrow no matter what the substrate is and will burrow and injure them selfs if the gravel is to big. My Tire Track is close to 7 1/2 inchs and my Peacock is around 5 inchs. And suggestions or info would help.

Thanks.