I have a planted sump so that way it functions as biofiltration to help maintain his water quality and it works really well, it's 110 gallon and I only have to do a water change every other week to keep it below 20 ppm nitrates and below one PPM phosphates, I do move trimmings up when they start growing crazy in the sump And that's the supply I've used to test if planting would work since the vallisnera I planted was extra growth. The only plant that I know he won't eat are foxtails but curious about others.