Seems like my 10gal tank has found stability.
Every week I change about 1/3 of the water, and rip out some Pearlweed and Java Moss. I add small amounts of fertilizers, and a 3l soda bottle provides some CO2.
I must say it is a little more challenging to get smaller tanks like this to balance out. I had lots of problems with nasty beard/red/blue algae, but it was worth the wait.
The fauna: 1 female Ram, 5 male Dwarf Pencils, 2 Otos, 1 Bamboo shrimp (you can spot it on the red "mountain", sitting below the AC Mini output), 3 or 4 ghost shrimps, and hundreds of Cherrie shrimps (hard to spot in the picture, there are a bunch in the Java fern to the right).
I have stopped feeding the fish... they eat small cherry shrimps, which in turn eat whatever grows on plant and substrate surfaces. The bamboo shrimp filters out microscopic organisms that drift through the water.
Very relaxing tank...