Like carsonsgjs, I'm not sure about the others, but the second is a sword. It's common for the outer leaves to die as new ones come in.
Are Amazon swords hardy? Will they survive like that(with no plant fertilisers)? How much light do they need daily?Second pic is an amazon sword. Third one looks like pondweed but could be wrong. Not sure on the first one!
Root tabs are dissolvable tablets or capsules that contain plant fertilizer which help the plants to grow.
I have been using Seachem Flourish Tabs for many years
How long can the Amazon swords survive without the root tabs? I will need some time to get those.Amazon Swords need fertilizer and root tabs