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I am not sure this is what you used, but the ingredients are probably similar.
Some things I would consider trying:
activated carbon powder (cheaper and higher surface area, we would be using this in our reefs if it didn't get everywhere)
pool chlorinating fluid (which I recommend for use instead of most bleach, it's about the same price and it's purely 10% sodium hypochlorite; there's a decent chance a sodium hypochlorite solution will free up what was already originally in a sodium hypochlorite solution)
If you want to be absolutely certain you get all of it off, I would apply something like dawn dishwashing detergent (get one with the least additives), rinse/wipe off, pool chlorinating fluid, rinse/wipe off, then activated carbon powder mixed with water (which should act as both a flocculant and chemical removal). Once this is fully done, if you still feel uncomfortable before starting back up, I would first fill the system with rodi water, then add calcium carbonate powder (optional, but will help in the following as a flocculant and a surface for bacteria) and add purple non sulfur bacteria, which are both good in reefs and excellent for bioremediation. Let wait until bacterial film occurs, then you should be able to increase the salinity and continue on reefing as if nothing happened.
This would be the least intensive, easiest, and most accessible almost guaranteed way to prevent future issues, while still being relatively cheap.
