I'm sorry I cannot tell what that is...but if its growing on the gravel I would remove the infected gravel bits.
It's very possible that that particular test could be expired. go take a water sample to your LFS and see if they get 8ppm ammonia.
If they don't then you'll likely have to buy another kit. please check the expiration date on it this time when you buy it lol.
It's very possible that that particular test could be expired. go take a water sample to your LFS and see if they get 8ppm ammonia.
If they don't then you'll likely have to buy another kit. please check the expiration date on it this time when you buy it lol.