Tanks update

I am very pleased with the 10 gallon since I dosed it with Excel.  I added twice the recommended amount for seven days, but not the initial dose.   The Black Brush algae is still gone from this tank.  However, the 20, which I only added a bit of excel to, has BBA coming back.  I have started to double dose it as well.   You can see the lights here.  The rrom is so bright, with sun coming in from the opposite wall (mostly windows) that it's hard to get good pictures.  My amatuer attempts are either too dark or showing glass glare.   The animals in the tanks seem happy.  All of my anabantoids have bubble nests going.  The Betas is huge now.  The Dwarf Gouramis' tend to wash away after 3-4 days.   I also have three emergent fronds in the 10, not just the one shown.  Two water sprite, like the picture, and a H. difformis which tried to come out, but the leaves blackened and it appears to be dying off.  I attribute this to my very dry house, and the air conditioning.  The sprite just isn't holding it's own in the 20 against the various Hygros, yet it loves the 10.  Two have come out, but many branches are laying across the surface.  It is out-competing the duckweed.  Go figure.