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Old 01-08-2013, 07:34 PM   #9
Wy Renegade
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Interesting. I wouldn't have thought that food source would be an issue for the daphnia, I'd be more inclined to lean towards too many potential predators. Certainly the fish fry can consume an enormous amount of food, so microscopic food sources aren't going to last long, Additionally, both your shrimp and scuds are also potential predators on the daphnia population as both are opportunistic and will typically feed on animal or plant matter. You may have to decrease the predator populations in order to maintain a healthy, thriving, daphnia population.
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