Salvinia minima

Water Spangle Growing & Care Guide

Salvinia Minima, famously known as Water Spangles, is a beautiful, highly popular floating fern native to the Americas. Featuring tiny, double-rowed green leaves covered in unique fuzzy hairs, it forms dense, high-fidelity surface carpets that absorb excess nutrients and keep aquarium water clean and algae-free.

Lighting Moderate to High

Water Hardness Floating (pH 6.0-7.5)

Substrate Floating (No soil needed)

Water Temp 15°C - 30°C

Toxicity Pet Friendly (Non-toxic)

Botanical macro photography of Water Spangle (Salvinia minima) - Plant AI care database

How to Identify Water Spangle

Water Spangle (Salvinia minima) is an iconic aquatic species. Recognizing its key structures is crucial for successful aquascaping and thriving growth.

✔
Visual Shape & Growth: Dense floating carpet of tiny, oval, bright green leaves covered in short velvet-like bristles.
✔
Leaf Morphology: Small, oval leaves growing in pairs, covered in unique fuzzy, crown-shaped hairs that repel water.
✔
Root & Anchoring Structure: Lacks true roots; has highly modified, fine feathery brown root-like leaves hanging beneath.

💡 Plant AI Tip: Take a photo with Plant AI to identify aquatic weeds and diagnose fungal spot diseases in 1 second.

Complete Cultivation & Spawning Guide

Follow our detailed scientific water parameters and care guides to keep your Water Spangle thriving.

pH: 6.0 - 7.5, GH: 3 - 12 dGH. Prefers stable, clean, slow-moving or calm freshwater.

Extracts carbon dioxide directly from the air. Zero water column CO2 requirements.

Moderate to high lighting. Under good light, it multiplies rapidly, forming beautiful dense geometric carpets.

Thin out the carpet regularly using a net. If the surface is 100% covered, it will block oxygen exchange and submersed light.

Highly efficient biological filter. Rapidly strips nitrates. Requires trace element and nitrogen dosing if leaves pale.

Strictly floating. Do not anchor. Keep in calm surface bays using airline tubing rings.

Optimal temperature is 15°C to 30°C (59°F - 86°F). Can tolerate cooler indoor temperatures well.

Extremely sensitive to wet leaves. Strong surface current or splashing will sink the spangles, causing them to decay.

Excellent for Betta tanks, shrimp setups, and nano fish aquariums. Offers shade and a safe grazing area for biofilm.

Provide good tank ventilation. Dripping condensation from closed glass lids will quickly rot the tiny leaves.

Gently scatter the tiny plants on calm water surface. Do not submerge them during placement.

Common Diseases & Treatment

Sinking & Rotting (Wet Leaves)

Symptoms: Tiny spangles turn brown, lose their fuzzy hairs, sink, and decay.

Action: Caused by excessive surface current or splash. Redirect filter output and keep the surface completely calm.

Spangle Yellowing (Nitrogen Deficit)

Symptoms: The entire carpet turns pale green or yellow-white.

Action: Dose liquid nitrogen fertilizer and comprehensive iron trace elements weekly.

Frequently Asked Questions

What makes Salvinia Minima leaves fuzzy?

The leaves are covered in specialized, water-repelling micro-hairs (trichomes) that trap a thin layer of air, keeping the plant buoyant and dry even if temporarily splashed.

Why is my Salvinia Minima turning brown?

Browning is almost always caused by dripping condensation from a closed aquarium lid, excessive water agitation that drags the leaves underwater, or severe nitrogen starvation.

How fast does it multiply?

Very fast. In a healthy tank with moderate light and nitrate availability, it can double its surface coverage every 3 to 5 days.

Is Salvinia Minima toxic to land pets?

No, Salvinia Minima is entirely non-toxic and pet-friendly for cats, dogs, and all aquarium inhabitants.