Thanks again for the advice,
have you done a full boil to eliminate top off water?
Good luck. Trash the carboy and get a new fermenter, whether it be glass, plastic or stainless. Your sanitation isn't the issue...
Regarding the Deer Park water and carboy: switching to a new 3 gallon carboy and a full boil brew, I'll eliminate both of those potential sources (for my next batch, not sure when I'll get the chance yet). The small batch should allow my to get a better pitch rate without a starter, eliminating that as source
How dusty is it in your house? I had persistant peddi infectoon years ago from airborne bacteria.
I don't think my apartment is particularly dusty, anyone know of any quick n dirty checks/rules of thumb for airborne contaminants (ie one that does not involve preparing a growth media and an incubator)
Try HYDROGEN PEROXIDE it works...
If I get a good batch using the 3 gal full boil, I may try going peroxide on my 5 gallon carboy. Unless I'm misunderstanding what you're suggesting, I'm thinking that much hydrogen peroxide (I'm assuming 50/50 means a one to one ratio with water to the already diluted "drug store 3%" hydrogen peroxide) will cost more than the 3 gallon carboy, so I figured I'd give it a shot first, plus I can save some money on my next batch using less (or hopefully no) extract
Thanks again for the help, I'll update with results from my next batch
Also - the IPA I made previously which tasted half decent for a week tastes like absolute sour ass now, completely undrinkable