what in the world is this?

exhumed07

Superstar Fish
Apr 30, 2006
1,774
0
36
Illinois
#1
I can't take pics of it but I'll describe the best I can. I've got like little grains of salt building on everything in my 30 gallon tank. (heater, filter intake, live plants, rocks, driftwood, and the glass) they are clear to white in color and no bigger then the tip of a needle. there is nothing in the 30 gallon any different then in my 55 or 20. I did put vacation feeder blocks in the tanks when I went on vacation and thought that was the culprit but if that was the case it would be in all my tanks but it's not. the only way to remove it is with a razor blade on the glass. anyone ever had anything like this happen? or at least know what it is?