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Anubias Spa

I'm thinking of setting up a ten gallon plant-only tank as a "spa" for tired
Anubias. My thought was to put in 2" of substrate, 3" of water, add 2W/gal
lighting, cover the tank with a tight fitting hood and inject DIY CO2.

I have a few questions:
1) is there a risk of the plants being O2-limited at night if the ambient
air was mostly CO2?
2) Is water circulation necessary or desirable?
3) What kind of substrate would be best?
4) What kind of fertilization would be best?


On Sat, 22 Jan 2000, Roger S. Miller wrote:
I grew Spathyphyllum, Anubias congensis (or lanceolata) and Cryptocoryne
wendtii all either fully emersed or with an inch or so of water over the
substrate.  The plants were in a 20 gallon tank with a mostly closed top,
so the humidity inside stayed very high.
I used a mix of about 5:1 gravel and peat-based potting soil, and
circulated water through the substrate.  I didn't fertilize; I used old
aquarium water instead.  Near the end of the time when I kept that tank I
also ran the output from a DIY CO2 generator into the air in the tank.
Roger Miller