I just recently made a 2 gallon IIPA. It started fermenting well after approx. 8 hours. I had to buy a blow off tube this morning at lowes. It was fermenting like crazy and bubbling in the pot of water. Krausen was coming through the fermenter and into the pot of water. Anyway, the bubbling has stopped and fermentation has seemed to slow down after 24 hours. Should I keep the blow off tube on or should I cap it??