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Salvinia Minima (Salvinia minima)

Salvinia minima is a small floating fern whose fuzzy, water-repellent leaf pairs spread into a quilted surface mat — large enough to net out easily, unlike duckweed, but just as effective at shading and nitrate export. It is a restricted species in some states (the related giant salvinia is a federal noxious weed), so verify local regulations and never release trimmings into waterways.

Care specifications

TypeFloating
DifficultyEasy
LightMedium (30–60 µmol PAR)
CO2Not needed
Fertilizer demandMedium
Growth rateFast
Max height1 in
Spread4 in
PlacementFloating
Attaches to hardscapeNo
Snail & shrimp safeYes
Temperature68–84 °F
pH6–7.8
ColorGreen
TrimmingRegular
StylesJungle, Biotope, Nature

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Salvinia Minima

Salvinia Minima

$6.99 In stock

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Propagation

Chains of paired leaves divide on their own; lift out handfuls to thin, and any fragment keeps growing.

Frequently asked questions

Is Salvinia better than duckweed or frogbit for a small tank?

For most people, yes. It controls nutrients and shade like duckweed but comes out by the handful when you want it gone, and it tolerates surface agitation and lid condensation better than frogbit. Its roots are shorter than frogbit's, which some prefer visually.

Why are my Salvinia leaves browning or sinking?

The usual causes are nutrient-starved water (floaters depend entirely on liquid fertilizer in a lightly stocked tank), water constantly splashing onto the leaf tops, or overcrowding so severe the mat shades itself. Thin the mat weekly and calm the surface where it floats.

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