I sprayed them last week but they have no negative effect from floramite yet. They look perfect. I was very carefull not to dose too strong.
What product did you use?
I bought Floramite from ebay and you can get 2ml bottle for around 15$ or so. Regular stuff for insects don't usually kill mites, so a miticide is the product to use. There is also the product called Sucrashield for those who prefer a more ecological solution. I went with the big gun
There are a few miticide products available on ebay, and floramite seem to be safe for plants. The instructions on the bottle said .3 to 1.2ml but I used .7 just to be safe.