Did you test for nitrAtes and nitrItes?
I would leave the diatoms for now. I would not mess with it until the cycle is over. I know it looks bad, but it will all come together and be ok soon!!!
Originally Posted by RiDoMart
The tank has been up for two weeks. Had a small amo rise,then it went back to 0.Can I vac the diatoms with out slowing down the cycling pross.
Yes you can. There is no need to but it's not going to hurt anything.
I personally would not worry about it. I know it looks bad, but it WILL go away once the cycle is complete. Keep track of your levels, I noticed last time I cycled a tank,the brown diatoms went away once my NO2 went to zero.