The picture of the back of the tank has small white calcium like structures that are wound like a snal. They are about the size of the head of a pin. I have seen several of these on the tank glass since doing the scrubber but the back wall and sump apeared over night. I clean the glass with an old credit card and they break off like they are calcium deposits.
The tubes coming out of the live rock are 1/8" to 1/4" long, they are hollow and hard. I broke one off with tweezers and it snaps like calcium. When out of the tank they appear to be clear.
Any ideas would be helpful. Primarally are they good or bad?
Thanks