Here are a few questions I still have:
would Calcium Carbonate be beneficial or harmful? I see a lot of people recomending CaCl instead of CaCO3. Is this only because of the difficulty in getting the CaCO3 to disolve? Does the CaCl affect the PH?
Any ideas on what I can do with the forground? Should I wait until the Dwarf sag and the reddish plant (Nymphaea stellata) grow more, or should I try glosso, HC, or Riccia, or anything I've not thought of?
I have seen that the dwarf sag will send out runners, but how does the red plant above spread? Will it? Or should I expect it to start growing taller instead of spreading out?
Edit: Here is a pic of the part I would like a foreground plant in. the one problem I see is there is a bit of a current here.