Filtration necessary in planted tanks?
I am planning on setting up a few low tech planted nano tanks for my bettas. I know that bettas are fine without filtration as long as they have frequent partial water changes; however, I am wondering if a lack of filtration has any effect on plants. The tanks would be small (2-3 gallons) so I wouldn't really have room for a power head or airstone for water movement. Will this effect my plants at all?