You asked about fertilizer...Skip and I have been using SUPERthrive mixed with any orchid fertilizer (Shultz, Peters, etc) with positive results. We also use aquarium water (freshwater only) from water changes to water them...fish pooh is good stuff!
We've done our share, and then some, of rescuing orchids from WW and one thing we've noticed, unfortunately, is that they never really grow and thrive for us...they just kinda sit there until they finally give up and die.
We don't recall any of the WW rescues reblooming for us either. Skip suspects it is because their (WW's) plants are reproduced by meristem cloning (Technically, the actively dividing cell tissue taken from root tips and from the tips of new growths or floral shoots; sometimes loosely used to refer to the mericlone plant that is produced from the laboratory propagation of meristem tissue.) and that they have basically cloned them so much that the orchids are just poor quality because of it.
A cool thing about Phal's that have finished blooming...instead of cutting off the spent bloomstalk, leave it be for awhile. The bloomstalk just might produce keikis (Hawiian for baby plant).
One of our Phal's with three keikis...
Hope this helps and welcome to the madness! Orchid addiction ranks right up there with chicken addiction & we are living proof...
Dawn

We've done our share, and then some, of rescuing orchids from WW and one thing we've noticed, unfortunately, is that they never really grow and thrive for us...they just kinda sit there until they finally give up and die.

A cool thing about Phal's that have finished blooming...instead of cutting off the spent bloomstalk, leave it be for awhile. The bloomstalk just might produce keikis (Hawiian for baby plant).
One of our Phal's with three keikis...

Hope this helps and welcome to the madness! Orchid addiction ranks right up there with chicken addiction & we are living proof...

Dawn