It has been 2 weeks, and I see growth. My angel/baby tears are dying, but my dwarf angel tears are growing. My Co2 long term tester is greenish blue, not the green that it recommends.
A side note is that I use a large air pump for my sand fall, and a HOB filter.
I would like to see a pic of the tank, angel tears and sand fall.
Strange that 1-typ of baby tears is growing and not the area. Perhaps water flow and Co2 is different for each due to their position in the tank.
Sand flow sounds interesting. Does it give the appearance of water flowing?