i started a thread on this somewhere.....blast can't find it. anyways, in theory there's no reason why this won't work, but as always with large predators, the space can always be better utilizd, especially if the fish is large. if it's somthing you want to try i'd say go for it, but all in all it's really a better idea to try this when the fish is smaller and hence the plants can help with some added sense of security. i'd also go with hardy plants that don't require co2, fertilizer etc. (even if the gars can breathe atmostpheric air.)