Thanks @lucasgg . So many things to learn just starting out.I assume it wouldn't make much of a difference. Areas that flood annually have fertile soil for both emersed and submersed growth. As long as the flooding doesn't cause a major unbalance it should be just fine. Study and copy nature.
It should be fine. The microorganisms in the EC probably won't die.I know this is an old post but I have the same question. Can I put in Eco-complete, dry scape, and plant/flood 3-4 weeks later? Or is it better to plant immediately after putting in the substrate?