| Thanks for the prompt reply....and yes Gina , they do move around ..slowly..yet appearing to be in different locations..and to NaH2o...Yes... except the shell is more Oval an a pearl (whiteish) color....i discoverd yesterday one the size of my pinkie nail... others are as small as a pencil lead.. quite a few of them.. i wonder if my " UV " will effect them in a negative way...? ? ? because some are moving along my tubing hose thru the chiller and then thru the UV...back into the tank... i appreciate the feed-back very much..! thanks again to you all at " RS "... cwrenge |