Yes a big blue bucket of it came down from heaven once upon a time after half a slab of Toucan headbanger. :blink: I checked with Caboolture Wholesalers a couple of weeks ago and they quoted $85 for a 25k bag. I was going to do a quick bulk buy just for Brisbane Northsiders or anyone who could pick up at a BABBs meeting, then I discovered that Sully had done one recently and hadn't contacted me because he thought I had heaps left from the first one (I do but I wouldn't mind getting ahead). I would just ring around any catering and cleaning supplies mob who do bulk disinfectants etc etc - a lot of local manufacturers buy the perc. in bulk to formulate their own "Ballarat Beauty Wonder Cleaner" or whatever so there's plenty of it bought and sold.
AFAIK when the perc has lost its available oxygen and stopped acting as an oxygen bleach it just becomes good old washing soda which is fairly innocuous and goes back into the ocean as sodium and carbonate ions, doesn't kill fish.