Brewing issues

[Semper Sitientem]

I bottled for 5 years. Had many batches take 4-6 weeks to carb up

Interesting. I’ve been brewing about the same amount of time and have never had it take that long.

 

[Herm brews]

As for carbonation time in bottles, I always sample a bottle after a week of conditioning. Generally, they seem to be ready to go in that 1 to 2 weeks timeframe.

 

[Craigerrr]

I think batch 4 has spoiled as it was fermented in a fermenter where I didn’t clean out the spigot properly. The gas doesn’t smell quite right so the outlook isn’t great. I may leave it a bit longer to see if the yeast cleans it up.

I wouldn't ever assume a spoiled batch.
Taste it when it is ready for bottling, if it tastes good, pretty good, or even just okay bottle it. If it tastes really bad, like wicked sour or vinegar as others have mentioned, go ahead an dump it.
Brew, learn, repeat!