The Spec V comes with a built in filter at the back. The lighting is supposed to be in the 7500 range, but it's LED and from everything I could find those are apparently iffy on plant growth.
The Ludwigia was on the list of low light plants sticky in the low tech forum. I don't really care if it stays red, as long as it grows, and if it doesn't, it wasn't expensive so I'll live.
The betta is coming from my already established tank that has been running for(counts fingers) wow, 9 months now with no new additions for the last few months and no disease, and has to move because he is having his tail shredded by tank mates.