That's what (aquatic) stem plants do and, so far as I've ever heard, there's
no way to prevent it. Some produce node roots more prolifically than
others, though. The trick is to place the plants and prune them in such a
manner as to hide, disguise or - better yet - make the most of the tendency.

kush

Tasslehoff wrote in message
u...
My stem plants are growing roots out from all the fronds and is making
them
look rather unsightly. I've got a plain gravel substrate with CO2 & PMDD
injection, any advice on how to stop this from happening.