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The plant needs to be left alone in good conditions and it should grow back fairly quickly.L. repens is one of the easiest red plants to grow in the aquarium, being able to grow in even lower light conditions (down to 1.75 watts per gallon with power compacts). It also makes an excellent candidate for moderately lit, non-CO2 aquaria. When lit well, the plant will grow at an angle over the substrate instead of straight up. To encourage red coloration, L. repens should be kept well lit (2.5 watts per gallon or more) with no shading. Lean nitrate levels (~5 ppm), high phosphate levels (~1.5-2 ppm), and heavy iron/micronutrients dosing will help produce intense colors out of this plant. Some hobbyists have noted that 9325K plant bulbs will also enhance red coloration.