First time ever i went to naxx10 whit my guild solo play that is, we failed 3 times on patch as the offtank died, and we had no melee dps so we gave it a try were i was solo in melee range and that worked for us back then. i had 27k hp buffed and we used 3 healers.
but if your tank is just decent geared you can do it with 1 healer today i think
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