Join Date: Sep 2012
Location: Universe,Milky Way Galaxy,Earth,United States,California
No chemicals? But I have one that clears it up! I dunno, a shrimp, pleco, or more plants would clean up the mess? Otherwise manual removal.
The dreaded problem of diatoms is due to a combination of the following: nitrates, phosphates, and light. Address those issues and your problem will go away. Being the plant forum, I'm guessing your levels are high on all three counts.