jayci Posted March 30, 2007 Report Share Posted March 30, 2007 Finally got some daphnia. really cool looking crttiers. Wish I had a magifying glass to get a closer look. I was wondering, what is the population growth rate on this critters? Got them in a 500ltr dark green plastic water tank. The water is cloudy. Quote Link to comment Share on other sites More sharing options...
SpidersWeb Posted March 30, 2007 Report Share Posted March 30, 2007 I've got my dapnia living with 5 white cloud minnows in one of those rubbish bins (would hold two garbage bags), and they're breeding and growing faster than the fish can eat, there is thousands in there now. Remember they need 'greenwater'. Green water actually looks light brown (but has a green tint when held up to the light) and comes from rotting organic waste such as lettuce, banana skins, a little dry grass etc. I mention this because I thought green water was water that was green from algae but its not. Sorry if you already knew that. What is cool is you wont see any for ages, then one day go out and realise they've cleaned the water and that there is millions of them. Quote Link to comment Share on other sites More sharing options...
jayci Posted March 30, 2007 Author Report Share Posted March 30, 2007 Thanks spidersweb I throw in some corgettes and some potatoe peelings and a bannana skin. How much organc matter are you putting in the water. And what about water changes? Regards Chris Quote Link to comment Share on other sites More sharing options...
jayci Posted March 30, 2007 Author Report Share Posted March 30, 2007 Also noticed that they like hanging around the the top water. This will make it easier to net them. Quote Link to comment Share on other sites More sharing options...
HummingBird Posted March 30, 2007 Report Share Posted March 30, 2007 In actual fact, green water is green from unicelluar algae. But daphnia eat bacteria just as easily, and that's what is grown from banana skins and whatnot. Quote Link to comment Share on other sites More sharing options...
Aquagold Posted March 30, 2007 Report Share Posted March 30, 2007 There is a lot of info on line and I know that Daphnia have more of a nutritional value when grown from bacteria. Only problem canbe maintaining a colony of good quality feed and water conditions for the Daphnia to thrive. We have problems feeding enough food and harvesting enough to keep the critters in the population growth phase. Great food source, under valued and hopefully soon to be developed into a biofuel...... Rob @Aquagold Quote Link to comment Share on other sites More sharing options...
Janelle Posted March 30, 2007 Report Share Posted March 30, 2007 I read in one internet article that the product "Liquifry" is good for feeding small amounts of daphnia. Has anyone else tried this? If it is, sounds like a way to feed both fry and daphnia in one go, albeit a tad more expensive than rotting leftover vegetation. Quote Link to comment Share on other sites More sharing options...
HummingBird Posted March 30, 2007 Report Share Posted March 30, 2007 I've used Liquifry before to feed my daphnia, can't comment on whether it was more nutritional or anything...they thrived, as per usual, though. Quote Link to comment Share on other sites More sharing options...
Caryl Posted March 31, 2007 Report Share Posted March 31, 2007 Sounds like an expensive way to feed daphnia to me. Quote Link to comment Share on other sites More sharing options...
Aquagold Posted March 31, 2007 Report Share Posted March 31, 2007 The nutritional content of Daphnia is in the oil content of the Daphnia and the contents of the gut. Hence both the reasons why they "enrich/gut load" artemia to raise marine fry. We freshwater fishers do the same with Daphnia. Do an anatomical study of the live food you are feeding to understand what the fish are actually feeding on. A bit like a spider sucking the contents from a fly...... Quote Link to comment Share on other sites More sharing options...
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