Hello everyone, my first post! haha Anyway, im setting up a grow out tank for juvenile discus and i want to use an under the tank refugium/plant filter. Im trying to figure what the best plant to use would be? I think the main requirements would be obviously very easy to grow (without worrying about adding co2 or TOO MUCH fertilization, preferably something that could grow free floating or atleast pulled most of its required nutrients from the water column, has to grow fast, and not be TOO demanding as far light requirments. Some of the suggestions ive had so far were rotala, hornwort, anacharis and some of the hygrophylia's. But what do you guys think the ideal candidate would be???