brown leaves

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...

So, I guess 2 weeks without lights doesn't go well with plants. Who knew? About 70% of my amazon sword plant's leaves are brown. I think that I need to trim these dead leaves off and just want some confirmation. Is there anything else I can do to help this plant bounce back?   I really don't...