The other day I found a paper online (forgot the title and authors, sorry) which researched a phenomenon in the common anacharis (egeria densa), they found that under high light and high nutrient conditions and low co2 levels, the plant has the ability to change the ph in a thin layer of water around its leaves, so that the ph shift (acidification) causes the co2-hco3 balance in water to shift towards co2 which then diffuses into the leaves. is this the only plant that has this mechanism of shifting ph around itself to uptake co2 when tother coditions for photosynthesis are optimal? What are your thoughts on utilizing this capability of the plant in a home aquarium?
Simple google search gave me these:
<a href ="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=121214 54&dopt=Abstract">Nih Pubmed index</a>
Full Text from Blackwell Synergy