Growing My Duckweed

[Henlus]

Some challenges to expect include algae growth and mosquito. Algae are those slimy green things you see on dirty water. You'll find them in gutters and stagnant waters. Some times the algae will try to outgrow the duckweed. I tackle this by either using a stick to get out excess algae or by changing the water. When you change water, wash the duckweed well and put them on the clean water. Add liquid fertilizer and lime to the water. This will help the duckweed to grow faster and cover the water surface - thus blocking sunlight from reaching the algae.

With mosquito, I've not found any solution yet. But I'm considering raising fish in another bowl next to the duckweed bowls. Hopefully, the fish will help cut down mosquito population not only in the duckweed pond, but in the area in general.

UPDATE: An effective way to control algae is by shading the duckweed from excessive sunlight. It seems to grow best under this condition.
As for mosquitoes, fish can't do a good job. Better leave it that way or cover with mosquito net. Or plant some lemon grass roung the duckweed pond.