memorywrangler Posted February 26 Share Posted February 26 I've been struggling to sustainably and densely culture moina for a year or so and I recently happened on this approach which seems promising. I have two 2.5-gallon containers that I started with some moina and old aquarium water. They are lit by a really powerful LED grow light that runs 12 hours/per day. As you can see, I have a lot of algae growth And I have really great crop of big, fat moina. Since I got the light, I haven't been feeding them anything. To be clear, I don't think it's technically green water, although it has a green tinge. Most of the algae are on the sides, but it seems that somehow the moina are eating it. Despite the current bounty, there are some problems. Most notably, the algae grown is really out of control: It pearls a great deal it took the water from Nitrate/nitrite = 40/7 to 0/0 zero in a day or two. This makes me think it's ripe for a crash. The other problem is that takes a lot of power: the light is 120W so 12 hours is about 1.4kWh/day which is about $200/year. So my next move is to reduce the photoperiod (unfortunately, the light is not dimmable). But I'm curious if anyone else has suggestions, has tried anything like this, or has any other ideas on improving the setup. I have a few specific questions, too: Are the moina eating the algae that grows on the side, or do I effectively have a very pollute, weak green-water culture? Could I just feed these cultures Easy Green? Is there something better/cheaper? Thanks. 1 Link to comment Share on other sites More sharing options...
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