Disinfecting my viv because of unknown death of newbies...they where not in tank as in skin to soil but I am taking it apart all the same.

How do I disinfect the following...

Live plants?

Shelf mushrooms and wood siliconed to the glass?

Will the coco fiber that is glued to the back wall hold a 10% bleach solution or will it rinse out?

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This is a photo of the wood that is attached to the back glass and the plant I am trying to save. The plant has made itself apart of the coco fiber on the back glass.