So after looking around for information on how to rid my tank of it (which isn't easy to find) I found this:
1) some people THINK the culprit is water
2) some people THINK the culprit is salt mix
3) some people THINK it has something to do with too high/too low phosphate and nitrate levels
My thoughts:
1) if you use ro/di water and your TDS is zero, then that Shouldn't be the problem
2) I have 3 tanks, all use Instant Ocean Reef Crystals, I have a friend who has a 75, 125, 150, 30, 10, 90 and uses that same salt. Only my 20g has this problem, and its going on 2 years of being set up, and the same salt has been used the entire time.
3) phosphate and nitrate Should be irrelevant since its silicate based?
I also read that more water changes can make it worse, so I haven't done one in about 5 days or so, since I was doing them every other day to try and kill it (normally the remedy to most anything is more water changes). After the previous picture of my tank I posted and not doing a water change, I do think it's getting better, maybe. But if it is working that poses another problem.. I still gotta do water changes eventually! So I'm almost more confused now as to what I need to do lol
Any more ideas?