Echinodorus 'Reni' is a well-known cultivar, among the smallest of the red Echinodorus — 15-40 cm (6-16") tall with a 15-25 cm (6-10") wide rosette. New leaves are reddish-brown to deep beetroot in color. It works well in small aquariums and is fairly unpretentious, though it needs plenty of light and nourishment for the best color. Skill Level Moderate CO2 Optional (recommended for best color) Requires Aqua Soil Recommended — heavy root feeder Type Rooted Max Height 6-16" Placement Midground to background Light Level Medium to High (approx. 50-100 PAR) Origin Hybrid Other Compact for a red Echinodorus, making it a good fit for smaller aquariums. Care & Planting: Plant into a nutrient-rich substrate; heavy root feeder, supplement with root tabs if using an inert substrate. A note on "melting": Like most Amazon Swords and Cryptocoryne species, this plant is farm-grown emersed (above water). When you first submerge it, don't be alarmed if the original leaves die back over the first few weeks — this is called melting, and it's a normal part of the transition, not a sign the plant is failing. Emersed leaves are built for air and only have stomata on their underside; once submerged, the plant sheds them in favor of new underwater leaves with stomata on both sides, better suited to absorbing CO2 from the water. New submersed growth typically appears within a few weeks.