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fungi is no fun, guy
The fungus ,if left, will greatly increase the chance of getting the fungi in your expensive optics. I would have thought pouring bleach on to chip board would be asking for floor destruction. Residual bleach could not be removed easily and when dry could flake off and be a problem for the optics.Bleach tainted chipboard would probably be unlikely to hold on a sealer.
If the chipboard was sold to you as moisture resistant, they need a kick in the a.... If the chipboard was regular stuff, you need to kick yourself and remove the whole floor(take the optics out so the airborne fungi do not settle in ) and wear a mask-there will be a lot of airborne fungi-that amount of fungi could be a major danger to the lungs.
If you can get one, an industrial ozone generator will help with major fungus killing. Rubber will perish, so you will need to protect those cables. Best for the floor to be reasonably dry first. Sounds like you need a dehumidifying system to prevent the problem happening again. The sort of ozone generator you need would have to pump out at least 2 grams of O3 per hour. I have such a machine, but it needs to have an electrode clean if I ever get the chance to do so. The sort of machine you need is typically used to disinfect rooms- eg if a hospital room has had someone with TB, vomit smell, someone has died and body left there too long....etc. I can tell you, ozone does quite a number on fungi. I have defungused a couple on leather jackets in my time(overdid a suede one- dissolved some of it.)
If you are down in Sydney, and are reasonably adept in electronics(to open machine and clean electrodes) and can return the machine after a few months, you are welcome to borrow it. It is moderately heavy- about 10kg with transformer. I have seen ozone generators on ebay new for around $280 plus postage which might be just suitable for your needs (would need extra time though.)
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