You've grown a lot of UG and downoi - from your experience, do you think UG and downoi BOTH need to be planted where there is high flow and high light?? How do they grow if placed in areas of the tank with less water flow and lower light (via floaters)? Do they both need high flow/high light or is one plant more demanding than the other?
Well, they grow faster with more light, but they can be grown fine with less current and light than I have certainly.
This is a high light, high growth rate garden, so it requires more work and care over time. Slower growing tanks certainly work well.