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Discussion Starter · #1 ·
I have a 5.5g Walstad setup at work with housing the fish which got me back into aquariums. My betta. Also have tag along rams-horn snails which have been a brown algae eating blessing.

In the tank I have good sized Java ferns, java moss stuck to everything, and anubias, some moneywort, wisteria, and duckweed.

My concern is that the duckweed will be too much of a nutrient sponge in the closed walstad system. I top the tank off with lab quality DI water as needed. Should I remove the Duckweed or just thin it out to prevent light blockage?
 
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