I agree with everyone else on the activity of the ray that is normal but u should get rid of the substrate and replace with some non silica based sand, the bottom of the ray is really red and thats not good,u could end up with a bigger problem on your hands,abrasions on the ray can cause some serious fungal problems so I would replace the substrate as soon as possible!!!hbluehunter;3473422; said:Yep, normal.. Might have to look at losing the gravel the bottom of the ray looks really red.
jdubb1316;3474008; said:replace with some non silica based sand