Bleach works just fine, and can be neutralized easy enough. However, you need to get the dose right, and you need to use bleach that is 5.25% sodium hypochlorite in water, no other surfactants, perfumes, etc. THAT is really tough to find now days! Seems like every bleach on the market has other crud in it, and they often hide that fact. Since these aren't "active ingredients" they don't have to be listed on the label.
Dr. Yanong lists 60 ppm for 24 hours as being effective, but I prefer to use 100 ppm. Here is his reference:
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Getting rid of the bleach includes rinsing the tank with freshwater and then using sodium thiosulfate until the rinse water shows no chlorine with a cheap DPD chlorine test (like for a pool). Once gone, there is NO residual issue with using bleach.
Jay