I bought this plant exactly 1 week ago. It was healthy.
Now it looks ravaged. All my other plants are thriving in my
CO2 /metal halide/PPS Pro /Seachem Flourish and Seachem Iron tank.
Yes i do use root ferts as well and i also have laterite as a substrate.
I suspect it might be my bristlenose. What do you
Does anyone grow amazons successfully with bristlenose?
I don't think it's nutrient deficiency ie K, Fe (1ppm) since all my other plants
are doing so well and am dosing according to instructions. GH 3-4 degrees.
I've had swords do this for two different reasons.
1st.) Most commercially produced swords are grown in emersed set-ups. They grow faster and are algae free. When first submerged they will cast off the older foliage. Swords then grow new leaves which are slightly thinner and better suited to a full aquatic environment. Very normal behavior. As you also say this plant is newly purchase, a very real possibility.
2nd.) I've had my sword's leaves blister from too much Excel. (Or too long of a bleach dip.) Yet most swords have a healthy enough root stock that they do recover with all new foliage.
I've heard that there are different types of plec's sold together as the same type (they look a lot alike) and some have different manners. Most are herbivorous and some are even carnivorous! Any of them would take advantage of weakened plants. I've done a lot of studies with plants in different pet stores for school, and I've noticed that most of the plants that are changing emergent leaves to submergent leaves, algae eater of all kinds will eat the dying leaves but usually leave the good leaves alone. This is just an observation, and I hope that it helps.