Hi, all. The red phantom tetras in my 150g, which I remodeled as a Rio Negro flooded rainforest biotope last summer, are having an ich outbreak.

I like to treat ich with heat rather than meds or salt, as both of those are devastating on the invert population. Standard procedure is to raise the temp to around 89-90F for three days, then keep it at 86 for another couple weeks. Normal tank temp is 77F.
So, the question is, can I do this without killing off my beautiful school of adolfoi cories?
Thanks--Thomas