disturbing mineral growth on clay pots

[neophyte]

ever since i moved to the new house i've been having this problem. there's consistent mineral buildup on the pots that is bothering me. at the old house, the water definitely also contained higher levels than normal of Ca/Mg but it only resulted in a thin white mineral layer over the body of the pot. this time, the minerals are literally crystallizing on the edges of the pot. the new house has a water softening system but i've been using water from the hose outside, so i am really at a loss...

(the first image is what i'm used to - a harmless-ish mineral film, nothing weird)

oh also please ignore the leca balls sitting on top of the moss... it's kind of weird but I was out of bark and I wanted to cover the moss to inhibit algae growth.