I'm also encounter bald patches after I dose reef vitality & color elements on the same day. Will these bald patches recovered? I also encountered diatoms on the sand bed after dosing elements. Now I reducing dosage for each products.
Can use superglue gel but sometimes they will come off. The better solution I think but I have yet to try is to find a soft mesh to wrap the yuma or ric to a piece of small rock & tied it with rubber band. Let it stick to the rock on it own & leave it for a week before removing the mesh.