Nostalrius Begins - Quality wow vanilla realm (1.12)

so everyone by now knows black lotus is by far the shittest spawn rate. just curious is anyone has a some what accurate location to the spawn points of them, finding the spawn points is near impossible considering people literally farm their locations 24/7, any info would be helpful

I heard plenty of them often spawn in the AH.

On a more serious note, the one and only time-wise and efficient Black Lotus farming process, is...
Not farming them. Just extra-luckily finding one through your adventures in the World, then come back every hour to catch the others based on your timer.