Thank you for this information. It was very helpful. I just bought a 22 kilo and a 6 colour melter/temperer from Design and Realization. They are very similar to the Mol D'Art versions. In all the videos that I saw, they never actually mention seeding and I was confused for a while. It became a topic of debate between my husband and I. He said that you just lower the temperaure and let it cool, I kept saying that we would have to seed it manually in order to create the crystals to temper it properly.
I am much more confident in using tonight after reading your post.