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Which daphnia should I get?

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Which daphnia are best suited for celestial pearl danios and green neon tetras? Magna, pulex, or moina? I'm thinking the magna are probably too big, but are the moina too small?

Has anyone ever used these guys?

http://livedaphnia.com/
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I've raised magna and pulex, and the pulex were easier to keep going.

Keep backup cultures! Daphnia explode in numbers, then crash. It's wise to heavily harvest when their numbers get high.

I raised mine in 5 gallon buckets in the backyard, no filtration. Screen the tops to prevent mosquitos, then add spirulina powder or rice flour to the water. Every few days, I would let a bucket of water sit overnight to offgas chlorine, than pour the old bucket out through a brine shrimp net, feed most of the daphnids to my fish, then start a culture in the clean bucket again. If numbers aren't massively high and the water is still clean, you can just swish the brine shrimp net through and catch a bunch without doing a water change.

Clean water is a must for daphnia. They're used in ecotoxicology because of their sensitivity to pollutants.
 

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I was joking, I didn't think it was a good idea anyways.

I keep them in a 10g that I culture ghost shrimp, daphnia, and algae in. It works very well and I've yet to have the entire culture crash, I've had it boom and then dwindle but I'm still on the original culture I bought years ago.
 
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