User blog comment:Pawn of Atlas/Contradictions about Fontaine's and Drinkable Plasmids/@comment-1500935-20140505140402

There's been a bit of talk on the forums at Irrational Games/2K Games about Fontaine's audio diaries in Burial at Sea 2, You Stupid Bastard and Product Recall. It's possible the dates of those two were inverted, as September the 10th would fit more for the first and November the 20th would be better for the second.

Now for the drinkable Plasmids' creation date I agree that's a bit confusing. According to BaS 2 I believe Suchong started spying on Fink and worked on the prototypes of those new Plasmids in early September or the month before. If the first step was to synthesize an oxidizing agent, it wouldn't have taken him long to mix it with the formulas of his previous creations and make new ones. Fontaine probably saw the cost in ADAM these prototypes required when he handled it to his men a few days before his faked death. He urged Suchong to recall the product, as it would mean less ADAM to genetically boost his army later during the civil war (the whole "genetic arm race" was profitable to Ryan, but it is also possible it was to Fontaine too). Suchong's collaboration with Fink however probably started when he succeeded in keeping open the Tear at the Silver Fin Restaurant, and at this point it was possibly only for the sake of completing the protector bond of the Big Daddies/Songbird. Fink was incidentally successful and simply left Suchong worrying for himself how to solve the problem. But Ryan had the store closed in early December and Suchong couldn't work furtehr with the Tear, hence why he asked Elizabeth to steal the hair sample in Fink's labs.

The dates of Suchong's audio diaries in BaS 1 are however messed up. According to him Elizabeth was spotted entering Rapture in October when she admits in BaS 2 that it was in November. The rest of his observations could have been for Ryan only, since the later knew all about the scientist's trans-dimensional experiments and results. Now for his "offer of employment," I can only imagine that Ryan thought of making Fontaine's a prison right after his rival's supposed death (and used it as a threat), but that the Council only agreed two months later. They were not all Ryan's puppets since for at least one case Ryan had McDonagh to convince them for a decision (in fact Lamb's silence), so I can imagine shutting down a profitable business so that its prisoners could enjoy the "Rapture way of life" on their own while still being sustained by the city was no easy thing to agree with. So yes, Fontaine's was probably transformed a few weeks before December the 31st.