Hornwort
Ceratophyllum demersum
Essential gear
- No substrate needed
- Filter
- Trimming scissors
- Net (for debris)
Lighting
Low to strong
Denser under strong light
CO₂
Not needed
Temperature
15–30°C
pH
6.0–8.0
Placement
Floating or mid–background
Loosely anchored or free-floating
Growth
Very fast
Needs frequent trimming
Setting / scene
Cycling / background filler
Temporary or long-term
Suggested habitat
Float or plant loosely during early cycling to quickly absorb nitrogen and stabilize water. Long-term planting needs strong light and regular trimming to prevent shading and debris buildup.
Plates are husbandry references—not build plans or generator parameters. Check your own water, vessel, and stocking before you act.