Blow off tube questions

[BurlyWind]

So guys, for christmas my wife got me 5 small batch 1 gallon extract kits from NB. Brewed them all and have them in fermenters, in particular the bourbon barrel porter kit was the last I did, used my remaining 1 gallon fermenter with a cork and blow off tube into a glass of water and star san. Its been a few days of pretty high activity and the tubes got alot of krausen in it as well as the water in the glass. Should i replace it with more sanitized water and a clean tube? Or is it ok to let it be?

 

[unionrdr]

Just leave it be. But keep an eye on it for when the fermentation is done. At that point, it'll cool off a bit & can cause a suck back. This is due to a partial vacuum being created. You don't want da funk getting sucked into the beer.

 

[IslandLizard]

+1^

After the heavy krausen forming is over, you can replace the blow off tube with a regular airlock. With the 3-piece ones, don't fill to the fill line, only use the minimum Starsan needed to cover the shuttle's openings, in case there is suck back.

 

[CBrewer]

I also vote for replacing the blow off with an airlock. Easy to do and you know you'll be safe.

 

[BurlyWind]

Thanks everyone I'll switch it to an airlock this evening