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- Path: sparky!uunet!newsstand.cit.cornell.edu!vax5.cit.cornell.edu!mdkj
- From: mdkj@vax5.cit.cornell.edu
- Newsgroups: sci.aquaria
- Subject: CO2 levels
- Message-ID: <1992Nov21.164728.16086@vax5.cit.cornell.edu>
- Date: 21 Nov 92 16:47:28 EST
- Distribution: sci
- Organization: Cornell University
- Lines: 17
-
- I have been keeping plants in my two tanks for quite a while, and although they
- grow well, they tend to stay smaller than what they were when I originally
- bought them. As an example, I bought a giant amazon (A. bleheri) 6 months ago
- with leaves (plus stems) that reached about 15 in. Now, all new leaves are
- only half that size (most of the difference is in the stem). The same happens
- with my cryptos and hygrophilas.
- I add weekly iron and trace elements, and have laterite in the bottom gravel.
- I use 3 40W Triton bulbs on the 70G tank and a reverse-flow Eheim undergravel
- filter. I have a relatively small amount of
- hair algae among my floating plants.
- My question is: could this lack of "big" growth be the result of CO2
- deficiency? If so, what would be an acceptable level and how is it reachable
- (preferably without having to buy a $$$ diffuser...)?
- Any thoughts on this would be greatly appreciated,
-
- John Opsomer
- opsomer@orie.cornell.edu
-