I am running pellets since Dec 30/2009 so it has been more then a month.
No Zeo rocks, just TLF media reactor driven by MJ1200,
Bare Bottom, (some, very little sand in the sump) 65 Gal tank. running 50% of 500 ml bag as per manufacturers recommendation.
I had never seen any mulm

.
I did notice extra SPS PE but LPS are not showing any more polyps then unusual. My Po4 was and is at the lowest detectable level of the Elos kit.
I don't have No3 kit. Some hair algae that i have in the sump (right were the pellets are) seems to be without any changes.
So i decided to
increase the flow a week or so ago and had pellets removed from TLF reactor and put in to a container where my DT return line discharge.
Still no mulm. So i bought a Zeo bak to supplement bacterial growth.
So far i don't see it worth my $73..
I wonder if i am doing something wrong?
Should we come up with a list of questions and e-mail to manufacturer?
.