Is Duckweed Good for Shrimp Tanks?

Benefits for Neocaridina

• Roots grow biofilm that shrimp can graze.
• Floating cover softens bright light.
• Fast growth takes up nitrate and other nutrients.
• Dense roots give tiny shrimplets extra structure.

Possible drawbacks

It can spread across the surface rapidly, block light from plants below and cling to wet tools or hands. Regular thinning solves most of these problems.

How much should you keep?

Start with a modest patch and aim to leave visible open water. The ideal amount depends on the light needs of plants underneath and the strength of the filter flow.

Safe maintenance around baby shrimp

Shake or rinse removed clumps gently in a container of aquarium water. Check for shrimplets before disposing of excess plants. Avoid pesticide-treated plants and copper-based algae products.