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The last time I did much home brewing I was on a municipal sewer system. A little bleach or sulphite (spent hops & grain, whatever) down the toilet couldn't affect it. Now that I live in the country, I worry about knocking my septic tank out of commission.

Is there a sanitizer that will do the job without snuffing the bacteria in the tank? Or is that a big worry?

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Here's another question about septic tanks, though with a different focus homebrew.stackexchange.com/questions/11236/… –  CDspace Apr 15 at 15:22
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I shudder at the thought of a sanitizer strong enough for a gallon or two to permanently knock out the bacteria in a septic tank. Plutonium maybe? –  Graham Apr 15 at 18:52

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Use any sanitizer you like...in the amounts you use it won't hurt the septic system. Thfink about the hundreds of gallons of your septic tank vs. an oz. or so of sanitizer. I've brewed 455 batches, and I've sent the sanitizer from every one into my septic system with no ill effects.

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Good to know. Tossing it outside, where it can dissipate harmlessly, isn't a big deal in warm weather, but seriously inconvenient when there's a foot of snow on the ground. Thanks! –  Glasseyed Apr 15 at 16:46

A little Starsan or bleach in the septic tank won't do any damage, provided it's in limited amounts (ie, don't pour a whole jug of bleach down the toilet...)

I do avoid putting the spent hops and grain down the toilet however. Excess solid material going into a septic system will eventually build up, either in the tank (needs to be pumped) or in your septic field, depending on design. I usually just dump it in my compost pile.

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Definitely. Spent hops & grain don't belong in the tank. I was referring to my previous habits, 'way back when. ;-) –  Glasseyed Apr 15 at 18:25

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