forget the blue balls. or any other color

what is your water? copper will kill inverts, many other nasty's are in our
tap water. give us some info and maybe we can offer advice...

Steve

"David" wrote in message
...
How D,

I have a 75 gal. With about 50+lbs live rock, Plenum, and about 75lbs of
live sand. I have a Red Sea Prizm Protein Skimmer and a wet/dry filter.
My levels seem to be fine but skunk cleaner shrimp and hermit crabs keep
dying. Snails, soft corrals, and fish are fine. The wet/dry is empty
and it used mostly for aeration and water movement. This tank has been
up for about 7 mos.
My question: should I be adding the "blue balls" to the wet/dry? Or use
something like a true sump or refugium? Will this help with my problem?