The first photo shows an emersed grown sword plant. Sword plants will almost always lose their emersed leaves when first placed underwater. The damage can start at the tip of the leaf like yours, or elsewhere on the leaf, but ultimately the leaf dies and decays away. Submersed leaves will grow in soon and take their place. They will be longer and thinner (like a sword blade), rather than have a long stem and a rounded leaf at the end. I'd leave the leaves on the plant until they die off and are reabsorbed. The plant can pull a lot of useful nutrients out of them before they die. If you want to read more about this process read here: http://deficiencyfinder.com/?page_id=716
The anubias in the second photo doesn't look like it has any kind of deficiency. The small hole in the large leaf is probably from being handled or some other kind of mechanical damage. The thin haze over the leaf is probably brown "algae," which is neither a true algae nor is it photosynthetic (it will grow in the dark). This stuff tends to die off as the tank matures, though people claim it sometimes appears in tanks that need more water changes or in tanks that are too dark. Still others claim it is promoted by high silicate levels in the water. Whatever the cause it will likely solve itself within a few weeks.
As the others mentioned above you'll need to fertilize with nitrates, phosphates, potassium and traces at some point to prevent the plants from developing deficiencies. Also, excel is not a nutrient, it is supposedly a carbon supplement, though I think the evidence for that is mainly circumstantial and I have seen no concrete evidence (experiments/trials) that prove adding it will help your plants grow faster or better. It does have its uses as an algaecide though when spot treated on certain species of algae.