Could be. Or they mixed up samplesGot 1/2 of the materials I needed to amp up the media box (sock replacement) in my sump. I've been just doing some crappy foam and calling it a day for the last year. I ordered multiple layers of different micron plus some sponge for fine capture. 2nd half comes tomorrow.
Today I need to clean out the carbon reactor (aquachar) because the sponge there is getting gross, and change out about 25% (first time in 3 months). I also need to check on my clearfx one. If the basket goes the way I want it to, I might layer that in there instead of running it in another reactor like I currently am because my tank is getting waarrmmm (and I don't run a heater).
I might clean the skimmer too... I think it's time.
Just sent off another ICP to see if whatever copper it picked up last time is gone. The cuprisorb is supposed to change to a "deep blue/black" color as it pulls copper and all it's done is turn a light brown - makes me feel like it may have been a fluke on the test.