I have a reddish rock in my 20 long. I'm not sure what it's called. I got it from a lfs and have had it in there since I set up the tank two months ago. It just dawned on me the other day that random things in the tank might raise the ph. The rock I have is dark maroon/red, kind of brickish. One of those typical ones you see, odd shaped with a hole for the fish to swim through. Just wondering if anyone knows what this is called and if it alters my tank parameters. (I used a crappy test kit, and my ph seemed high, not sure if it's just inaccurate, or if my ph is too high)
While on that subject, I have a few petoskey stones in my tank as well. (Fossilized coral and state stone of michigan ) They are normal grey colored and you can see patterns when they're under water. I just started to notice lately that they are getting dark red rust looking spots on them. I'm sure these weren't there before. Does anyone know what could be causing this or what it is? I thought all algae was green, so I didn't think that was it. Does my tank have some sort of parasite in it or are the fish somehow doing something...? 8O
While on that subject, I have a few petoskey stones in my tank as well. (Fossilized coral and state stone of michigan ) They are normal grey colored and you can see patterns when they're under water. I just started to notice lately that they are getting dark red rust looking spots on them. I'm sure these weren't there before. Does anyone know what could be causing this or what it is? I thought all algae was green, so I didn't think that was it. Does my tank have some sort of parasite in it or are the fish somehow doing something...? 8O