Question about my ray

[Rheowe92]

I have three rays, and noticed today ehe other two are perfectly fine and do not have any redness at all, but my smallest motoro has red under her why? I have black sand wich is silica free and safe for rays. But rhe other two are percectly fine under side is comepletly white and normal but shes not? Is she going to be ok?
I dont know why she has this and noone eles?

 

[ANDREWMCC]

I had the same problems when I first got a younger ray. Test your water and if it test fine you should be ok. The redness will fade with age. More pics would help as well. How long have you had her. How long has the tank been up

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[snake8myelbo]

What kind of sand is it? Either sharp sand or bad water quality. What are your parameters?

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[AquataHolic420]

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