[mark]

Duncans

Hi all

I have a duncan frag which been the tank for 6months its growing well started with 4 heads now got around 14. Expans every day without fail.
the problem is I've noticed on the stem that there are a couple of patches of white appear.


Don't see anything in the tank eating it by day or night.
Reading are normal and everything else in the tank is growing well and expanding.


Any ideas?


thanks


mark