🌿 MIX of Normal Duckweed & Rootless Duckweed
 
Duckweed & Rootless Duckweed Care Guide
 
🌱 Overview
Duckweed and rootless duckweed are tiny, fast-growing floating plants that create a lush green carpet on the water surface. They are excellent for nutrient control, shading, and giving aquariums or ponds a natural, balanced look.
 
⚡ Quick Tips
Grows extremely fast — be ready to remove excess weekly
Ideal for reducing nitrates and improving water quality
Sensitive to strong water movement
Thrives in nutrient-rich water
Rootless duckweed spreads even faster but is slightly more delicate
 
🌿 Key Features
Size: 1–5 mm per plant
Growth rate: Very fast (can double in days under good conditions)
Growth habit: Floating surface cover
 
🌍 Suitable Environments
✅ Aquariums
✅ Outdoor ponds
✅ Water features
⚠️ Not suitable for closed terrariums (needs open water surface)
 
🪨 Substrate / Soil
❌ Not required
Floats freely on the water surface
 
💡 Light Tolerance
Low to high light
Stronger light = faster growth
 
🌡️ Temperature Tolerance
Minimum: ~5°C
Maximum: ~35°C
🌡️ Ideal Temperature
18°C – 30°C
 
💧 Humidity
Not applicable (aquatic plant)
 
🚿 Watering
Always floating on water — no watering needed
Prefers still or slow-moving water
 
🧪 Feeding (Fertilisation)
Absorbs nutrients directly from water
Thrives in nutrient-rich systems (fish tanks, ponds)
Can be boosted with liquid fertiliser if growth is slow
 
🌱 Propagation
Extremely easy — spreads naturally by division
Simply remove and transfer to new water
 
⚠️ Common Problems
1. Melting / Disappearing
Usually due to lack of nutrients or unstable conditions
2. Yellowing
Nutrient deficiency (especially nitrogen or iron)
3. Not Growing
Water too clean (low nutrients)
Too much surface agitation
4. Overgrowth
Blocks light to plants below
Needs regular thinning
 
🔍 Duckweed vs Rootless Duckweed
Feature
Duckweed
Rootless Duckweed
Roots
Small visible roots
No roots
Growth speed
Fast
Even faster
Stability
More stable
More sensitive
Nutrient uptake
High
Very high
 
💡 Pro Tips
Perfect for natural filtration systems
Great for fish breeding tanks (provides cover)
Excellent for reducing algae naturally
Remove excess regularly — it will take over