I am planning to get some more plants from petco/petsmart after Christmas, and I was wondering what kind of plants that I should NOT get? I have heard that peace lillies are bad for bettas, is this true? I just wanted to make sure that I don't get anything that would harm my Bettas.
I have also read peace lilies are not a good idea to fully submerge in betta tanks because they are not actual aquatic plants. I have some anubias which have done really well since I bought them a month ago....pretty low maintenance and very green and pretty =) Also, java moss and java fern are suppose to be good plants for betas as well. As a side note, maybe consider getting a floating log for your betta, too....mine loves his! It provides them with a "nook" to hide, sleep, and play. Good luck!
it all really depends how you use them. anything "semi-aquatic" must be planted so that most or all of the leaves are outside of the water (draceneas, lilies, and pothos fall in this category) but can still be a nice addition to your tank. if you try to plant them fully suberged, they will die and rot over time, which will poison your water. other than that, i don't think i've every heard of any plants being patently "bad" for bettas.
i think he meant planting them in the tank, but letting the leaves grow out of the water till they come out through the lid. as for plants in the filter, their primary purpose (besides being a beautiful alternative to potted indoor plants) is to improve your water quality by soaking up ammonia and other elements that are toxic to fish, but food to plants.