Ok, I had to put on one of those snap-on type orange blowoff caps ( the one that has two antenna looking plastic protrusions where one is for 3/8 tubing and the other fits 1/2 inch tubing) on my 6.5 gal carboy. I did this because with the hop sediment and large starter I ended up going over my expected volume .
So I have a 1/2 inch id hose on the cap because I was out of 3/8 and I wasn’t expecting to have to use it.
Well 9 hours into fermentation it’s blowing off co2 like crazy. I also noticed a slight hissing sound. I noticed small bubbles forming under the cap and slowly dripping down. I quickly grabbing a paper towel and star san and wiped the outside down. I took some duct tape, out of fear of the cap blowing off and hoped to fix the seal.
Well now the tape is getting wet and if I press the duct tape some of the blow off drips down.
It’s bubbling in the gallon air lock like crazy but I’m worried about this other leak. This has never happened with this cap before.
Should I be worried I ruined the beer or is everything ok? And should I remove the duct tape or just leave it until I get ready to transfer or when the vigorous ferm settles?