Nikki wrote,
so I took ten level tablespoons to a gallon of water
and did a dip every 12 hours........

Likely striped it's slime coat and along with it any parasites that had
not yet got through the skin. Medication will not kill the ich
parasites already inbedded into the skin.

and started treating the tank with rid ick+ ............

Because of the pleco, treat half dose. I treat days 1, 4, 7, and 10,
with a 20% water change with gravel vac before each dose. Being that
your treating half dose, you may have to treat day 13 also...
Rid-Ich contains formalin and malachite green. Malachite green is
really hard on catfish, scaleless fish, and tetras. Higher temps. and
lower pH makes it more toxic. Goldfish are coolwater fish. Raising the
temp. would only raise the stress level of a coolwater fish - the
medication alone will kill the parasites. It would be better for both
the pleco and goldfish *not* to raise the temp... Malachite Green also
remains within tissue for a long time, so repeated treatments causes
accumulation to toxic levels. The toxicity within fish presents as
respiratory distress. You didn't say if there was ich on the pleco - if
not, remove it *before* the 3 treatment.
Dim aquarium lights, or turn them off - malachite green is degraded by
light... Oxygen levels drop with the use of formalin - another reason
not to raise the temp........... Frank