I did look into proxitane (peracetic acid) some time ago as an alternative to orthophosphoric acid but the price is just too high to consider it as an alternative.
Admittedly i didnt go too deep into the usage rates of each but on a $/mL comparison of an equivalent molar concentration it was something like 20x the price.
In case that was in response to me - yes cold water with the bleach and vinegar. I then rinse with hot to drive off the chlorine (my aforementioned chlorine paranoia), then sodium met, then cold water then use immediately. Using hot water with the bleach will render it ineffective.
I picked up some starsan and gave it a burl for the first time the other day. Swirled it around in my fermenter, and FOAM. What is the go here? Do people let this drip dry and go away? I used it at 1.5mL per litre of water. Is it ok to put the beer on this?
I currently use iodophor, when that is gone will probably go starsan because you can pre-mix it and store in a spray bottle, iodophor won't do this. Unfortunately I have ~400ml of iodophor which will last me for about 2 years...