Troubleshooting
Salvinia natans problems — and how to fix them
Salvinia natans (Salvinia natans) is generally forgiving once you match its basics, but a few issues come up again and again. Here is what each one looks like, why it happens, and the fix.
Leaves waterlogging and sinking
Surface splash or strong filter flow soaks the water-repellent hairs so plants lose buoyancy. Baffle the outflow, lower the water line below the filter return, and keep the surface still.
Rapid overgrowth
Covers the surface fast and starves submerged plants of light and oxygen. Skim weekly and never dispose of it in natural water — Salvinia is a regulated invasive in many areas.
Pale, leggy growth
A sign of insufficient light. Move to a brighter position or add stronger lighting so leaves stay small, green and tightly clustered.
Browning patches
Result from cold snaps, nutrient depletion, or being trapped against equipment where they rot. Remove dead plants promptly to protect water quality.
Prevent salvinia natans problems before they start
Most salvinia natans issues are care-mismatch, not bad luck. Dial in the basics:
Looking for salvinia natans in general rather than its problems? Read the full salvinia natans care guide — light, water, soil and feeding.
Salvinia natans problems — FAQ
Why is my salvinia natans leaves waterlogging and sinking?
Surface splash or strong filter flow soaks the water-repellent hairs so plants lose buoyancy. Baffle the outflow, lower the water line below the filter return, and keep the surface still.
Why is my salvinia natans rapid overgrowth?
Covers the surface fast and starves submerged plants of light and oxygen. Skim weekly and never dispose of it in natural water — Salvinia is a regulated invasive in many areas.
Why is my salvinia natans pale, leggy growth?
A sign of insufficient light. Move to a brighter position or add stronger lighting so leaves stay small, green and tightly clustered.
Why is my salvinia natans browning patches?
Result from cold snaps, nutrient depletion, or being trapped against equipment where they rot. Remove dead plants promptly to protect water quality.