Whoa temps of 90 are way too high! I treat ich at 82. I wouldn't go over 86, personally- IMO 86+ is the range you start losing tropical fish... rams are better acclimated to higher temps, but IMO 90 is quite extreme.
You shouldn't alter your temps more than a degree or at most 2 degrees per day. Fast temperature changes are one of the quickest fish killers.
If there's any way to separate the rams tonight, I'd do it. If she's already looking that poorly then the male's bullying may be all it takes to push her over the edge.
I'd also be very cautious about mixing meds- there's no way of knowing till too late if the meds are contraindicated!
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