Oh my this is so complex.. @MightyMosin how much yeast am I supposed to use with the new 4 liters of water? I can't figure it out
Hello!! I did as you said and it restarted to bubble a lot. I just came back from a one week vacation and I will be able to test it with the hydrometer again tomorrow or the day after tomorrow! I will keep you posted!Has this been resolved?
For now, just leave it alone and let it finish fermenting.
It will likely continue fermentation until it gets to 1.000 or possible a bit lower like 0.998.
Check it again in ~4 days. If it is at 1.000, then it is likely done though I might wait another 5 days and check again to ensure that it hasn't continued to ferment. You can let it sit like that for several weeks to allow more of the yeast to drop to the bottom and clear up some.
Many mead makers will transfer it to another container to get it off the lees (dead/inactive yeast) once fermentation is completed and then let it settle and clear in the secondary container. The choice is up to you, though for many yeast, leaving it on the lees for months can cause unwanted tastes; there are exceptions but I wouldn't worry about those at this point.
Stabilizing:
Potassium Metabisulfite - This is added to help avoid oxygenation as well as making an environment that is not health for bacteria. You will want this for shelf stability. I generally always use this; there are plenty of others that will pasteurize to avoid adding this and its personal choice.
Potassium Sorbate - This will inhibit yeast from budding and creating more yeast cells. This does not stop an active fermentation. This is important to use if you will want to add any fermentable sugars to the mead when it is done. If you decide to add fruit or more honey for sweetness you will need to use some of this. A non-fermentable sugar like lactose doesn't require you use this. If you pasteurized, you will have killed off the yeast and you don't need this.
Important note: If you use this, then you should consider the Metabisulfite as mandatory as there are some bacteria that will eat the sorbic acid as food and leave bad flavors behind and the Metabisulfite should take care of those if present. Again, pasteurization is also an option.
When you transfer to another container, you can/should stabilize. I don't know your pH (affects how much K-Meta to use) but I'll assume a pH of 3.5 and for the 10L batch I would use .68 grams or .068 grams per L.
Assuming 10L is your total and you ferment all the sugar out, you should be at ~8% ABV which would require 200mg/L of Potassium Sorbate to stabilize.
Add your stabilization chemicals to your secondary container and go ahead and siphon your mead right on top of it. You will have to divide the stabilizers up based on the size of containers you are siphoning into.
So ~30 days later, did you end up with something that is working for you?