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To Mr. Barr,
You recently reported excellent growth of hairgrass under a variety of
conditions. Great! Wondering about a few things, if you'd be willing
to share some more details...
Is the hairgrass in the 5w/g tank that you mentioned, growing in plain
flourite? Do you find the need to substrate-fertilize the flourite for
hairgrass or glossostigma, when there is high light such as this? How about
at lower light levels?
Under high light does the hairgrass stay lower, or will it still go
Also, what co2 concentration (ppm) do you prefer? Do you vary it
depending on light level?