My fish got ich around 3 weeks ago and it was successful (as of now). I used this medication named “Seachem Paraguard” and was curious if that sticks to your rocks like copper does? I did not use copper through the ich process. I used these rocks that I would love to put in my DT and was wondering if anyone knows if this sticks to your rock at all? I wonder why because I don’t want my inverts dying because of it.