05-16-2008, 05:50 PM
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If you get wild caught cardinals, you may find that they have a problem with any PH over 7 (course, I can't keep the G--D----ed things alive in any kind water at all, so I may be biased.) Also, the general run of Dwarf Gouramis can be a little sickly, since they've been mass produced, so if they kick the bucket on you, don't be too frustrated. Your cories and Bristlenose should be fine. Just drip acclimate them (actually, you could probably dump and pray without ill effects, but it'd be better if you ran a piece of airline tubing, loosely knotted twice, from the tank to a container, put the fish in the container, and slowly siphon the tank water drop by drop until you double the volume).
If I were doing this, I'd skip the Dwarf Gouramis in favor of 1 Pearl or 2 Honey Dwarf (Colisa chuna) gouramis, and switch out the Cardinals for Neons, Flames, Black Neons, Glowlights, or Red Minor tetras.