The bamboo was not in my tank - but in a coworkers and their neighbors. They didn't have Ich. Their fish died a day or two after the bamboo plants were put in their tank. Prior to putting the bamboo in the tank the fish were fine for 6 months or more.
I had ich in my tank - but no bamboo plants. My plants were more like long grass blades. My plants were doing good until I treated the tank for ich. After treating the tank for ich, the plants started to decline. I decided to replace the live plants after the Ich treatment. I lost no fish during or after the ich treatment.