Ok, I filled two white nylon knee-highs today with Seachem Matrix. I put one in my 125, and one in my 40B. The one in the 125 still looks the same tonight, but the one in the 40B has turned bright pink! (the knee-high). What's up with that? Where the nuggets of Matrix press against the nylon they look normal colored, it's just the nylon itself that turned bright pink (as far as I can tell). I'm going to buy more knee-highs tomorrow at work & switch it out.
Has anyone seen this before? I'd better test that water!
