plant pathology

Does anybody know of a cannabis plant pathology device in San Diego?any info would be very helpful. Thank you.

Plant service.

I highly doubt there is a plant service mate. Fix it yourself, read and learn more.

I appreciate any response.thank you.I have been researching the problem for a couple years.I am a very expierenced grower.my conditions are all optimal.my roots keep having this mold fungus like substance reappears. I do feel like there is a professional person out there,I just have to find them.pathology tissue testing would take the guess work out of it

If you enlarge the image you can see what I am refusing to.I look at the roots with a loop.

Refuring to.