Something is still wrong with my tanks chemistry/biology
Haven't posted for a while. I have almost 18 months experience now. I've been through giving all my plants away (constant algae problems) to eventually and slowly re-adding plants again. This time with low lights and no dosing. I have finally acheive a mostly balanced working planted community tank.
It has been doing better and better the last several months. I's just that I can't seem to get rid of the brown diatoms. They grow slow enough that I just have the equivalent of about 2 square inches total scattered about on the glass each few days. I don't really care too much because it just takes a minute to remove. The trouble is that an equal amount distributes over my plants as well. Their growth rate has been slowing down the last few months, but it surely doesn't help the plants. As months pass the leaves look a little worse, and a little worse.
What can I do to stop the persistant and nasty brown diatoms?
I'm pulling my hair out!
I thought it was supposed to be a "stage" that tanks go through.
I have slowly increased my lighting from 1.5 wpg 10 hrs/day to a combination of 1.5 wpg 6 hrs/day, and 3 wpg 4 hrs/day.
Nitrate - <10 (actually about 8 or 9)
Nitrite - 0
Ammonia - <.1 (might be 0 - could be my eyes - I use all ap tests
CO2 - 20 to 35 (still having a little trouble getting it dialed in
pH - 6.6 - 7.0
phos - 2
kH - 3.5
eco-complete (18 mths old)
2 x 30% wc/week with stored heated/aerated water