You don't get Squirtle at Floccesy Ranch, or anywhere in Black 2 for that matter. The only way to get it in Black 2 is through PokeTransfer or trade, which requires you to have a Squirtle in a different game. Whatever they said in that video is wrong.
If you ever want to know where to find Pokemon in a game, use a site like Bulbapedia. YouTube is not always a reliable source. This shows where you can find Squirtle in every game. Floccesy Ranch is not listed.