discolouration

As the title suggests, my Bacopa Monniera (not entirely sure on its exact name) and Amazon Sword have some brown discolouration on some of their leaves and I'm not entirely sure why. I've attached a couple of photos although it's not very clear in the photo of the sword. These plants are in a...

First of all I apologize if my English is not good as it's not my native language. I have gotten a Betta I think half moon, since march 8th and the fins were alright nothing weird in them and then I started noticing that they became more pointy and I googled to find out that this is what's...