PlantFreshwaterBeginner

Red Root Floaters

Phyllanthus fluitans

A fast-spreading floater with vivid red roots that shrimp absolutely love.

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About

Red root floaters (Phyllanthus fluitans) are one of those plants that make an immediate visual impression the moment you drop them in a tank. The leaves sit on the surface in small rounded clusters, and under good lighting they take on warm reddish-green tones, while the dangling roots below shift from pale white to deep burgundy depending on light intensity. Native to South America, they naturally colonize slow-moving or still waters where they drift freely at the surface. In the aquarium, their fast growth rate makes them a practical choice. The root mass becomes a genuine refuge for shrimp, especially young shrimplets, and for fish fry that need somewhere to hide from larger tankmates. That same dense root structure pulls nutrients directly from the water column, which helps keep nitrate levels in check in a well-stocked setup. No CO2 injection is needed, and while they grow faster under stronger light, they are tolerant enough for a range of lighting conditions, making them a solid pick for newer planted tank keepers. The main maintenance task is occasional thinning, since they can spread across the surface quickly and shade out plants below if left unchecked.

At a glance

Type: Plant
Water: Freshwater

Water parameters

Temperature: 60–86°F
pH: 5–8
Hardness: 0–30 dGH

Care guide

Red root floaters thrive with minimal intervention but need regular thinning to prevent surface mats from blocking light to plants below. They absorb nutrients directly from the water column, so fertilizer is optional in established tanks but beneficial in newer setups. Position them where they receive moderate to bright light for best red coloration in roots and leaves, though they tolerate lower light. Ensure water movement is gentle. They prefer slow currents or still areas. Remove dead or decaying leaves promptly to maintain water quality. They're excellent for reducing nitrate buildup in heavily stocked tanks.

Breeding

Red root floaters propagate via runners that develop new plantlets. Mature plants naturally produce daughter plants that can be separated and repositioned once they develop independent roots. In nutrient-rich conditions with good light, they spread rapidly. Simply pinch off rooted plantlets and replant or float them elsewhere. No special conditions needed; they propagate readily in standard aquarium water. Harvest runners before they form dense mats to maintain open water flow and light penetration to lower tank levels.