Board Thread:General Discussion/@comment-7292443-20130320015211/@comment-4057437-20130320101542

With an alchemy skill of 100 and wearing five items of fortify alchemy attire, (29% each, ring, gloves, circlet, chain and a regular Falmer helmet) gets you a fortify enchanting potion of 37%. Without the falmer helmet, the max is 32%

Also, the strength of flame, frost and shock enchantments on your weapons is directly linked to your skill and perks in the destruction tree. Adding a perk such as Augmented Flames will increase the power of weapons with the flame enchantment, even if the enchantment was added to the weapon earlier.