I've been monitoring my tank and have noticed an almost consistent level of both ammonia and nitrate, even with daily pwc.
I upgraded my light to see if the Willow Hygro was failing due to low light, time will tell. I did remove more dead leaves off of it and added a few more plants to help absorb some ammonia, hornwort (Ceratophyllum demursum) specifically, which has taken off and grown 2" since being added last week. It actually "stretched out" somewhat and opened up too, but has definately gotten taller.
As of this morning, water reads:
pH: 8.0
Ammonia: 0 - 0.25
Nitrites: 0
Nitrates: 0 - 5.0 (closer in color to 0 sadly)
It was suggested that the power filter with this tank is too small. I am thinking about upgrading to a larger filter... Looking at the Azoo Mignon 150 (good for 20-30 liter tanks (5-8 US Gallon))
Thoughts re filter upgrade?