Bleach will weaken the fabric & shorten the life of the net, even at low concentrations. <Think swimwear in chlorinated pool ...>
Most fish store (& pond people) use potassium permanganate. But if your tank is at low risk for having pathogens, then air drying is prob all that is needed.
80 gal FW with 30 gal DIY wet/dry/sump.
9 fancy golds, 1 hillstream loaches, 1 rubber-lip pleco (C. thomasi), 3 SAEs, small school of white cloud minnows, planted.