these are good examples of low light tanks. they are primaily root feeders and low maitnence plants... mosses vals crypts anubis with some exceptions. the problems with big tanks like this is it takes a long time for them to settle out if you mess up orriginally. i personally have a style of keeping plants similer to this, in my 10g it owns everything,... in my 55g, im still working on it. i basically have high to med light and almost all root feeders + mosses so you dont have to dose the watercollum. the 55g is having algea problems but im on no hurry and slowly killing the stuff. as in any tank you want a ton of plant mass, esp. in low light tanks. the ones that do the best have the most plants.
back on topic....
those are nic tanks. lots of moss in there. i dont know if anyone knows this but dwarf hair grass grows awsome in med light low tech. over time.
thanks for sharing these pics,
- fish newb -