Hi all, what do you think is causing these symptoms in the plants in the picture? Thanks

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Are you dosing potassium?

The first plant is not an aquatic plant and will die underwater over time. It is called purple crinkle.

The plant in the second picture isn't very clear in the photo. Can you take more pics of it and any other plants in the tank having issues? Is it the same type as the first picture? It is hard to see if it is or if it is anubias. I think I see some purple under the lower leaves but I am not sure.

Are any other plants dying?

Do you have a pleco?

Do you fertilize?

Hey guys dose potassium 3 times a week. All other plants are doing great. Pictures are showing the same plant

That plant is purple waffle Purple Waffle Plant | Costa Farms
is not an aquatic plant though it will support some days under water it will die . Some pet stores are selling them as aquatic but it is a scam.

potassium. we can get some from bananas.