First two are easy. Ludwigia repens. hard to plant and keep in soil, roots fragile, fish easily uproot. don’t even need roots to plant it. drill a hole in a plastic bottle cap, string the stem through the hole of the face up bottle cap. Plant in sand substrate, when the bottle cap fills with sand it becomes a natural anchor. The stem will spring new roots. The plant will grow to the top of the water. Stays red easily as it grows.
Thank you for all the help
Have you ever bleach dipped?