I have been cycling my new tank for about 7 weeks. I got a great deal of diatom about 2 weeks ago and now it has started to die. In its place I have now gotten a green powdery substance on my glass. I had my ammonia tested at a LFS (he used a test strip) and it read 0 when I test with my Red Sea my ammonia reading is always around .01 and my nitrites are aroung .05. My ph is around 1.025.
I added a yellow tail damsel about 3 weeks ago and he is doing fine.
What is the green powdery substance on my glass?
Has my tank finished cycling?
