Why do you think you'll have to replace the macrandra and glandulosa because of co2?
Mine does great with co2.
Edit;
I reread your post and I think I originally misunderstood .
You think they'll die off before you get the co2 going.
I grew both of these plants without co2. It's very slow growth but they did grow and multiply.
Last edited by Chaoslord; 09-08-2012 at 01:32 PM..
Reason: added edit after rereading post.
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