Really? We planted it in the substrate when she set up her Edge in May and it’s been thriving. When I dug it all up to put it in her new tank yesterday it had fresh, clean looking roots on it so had no idea it needed to go on wood.
It could be. Though I did add an extra light and have been a bit lax with the water changes so it’s probably too much phosphate. Gonna keep pulling it out and stay on top of the water changes and hopefully that will sort irZ