Moina Macrocopa

I failed twice trying to hatch indoor, then tried outdoor in a 5 gal bucket hot rainy days and hatched within 2 days, hatch rate is actually high, order comes with 2 vials and used only half vial to get a lot of hatchlings enough to start a culture

It's day 11 and nothing has hatched, at all. I used the capsules between 4 containers. I wanted to experiment and see which hatched out best. 2 Reverse Osmosis and 2 tap water (well water with a whole home filter system and treated with tap water conditioner). 1 R/O and 1 tap were under a heat light (water temp 82°F) and the other 2 were room temperature (72-75°F). All containers are under a grow light (with my plants). NOTHING, absolutely NOTHING has hatched. When day 14 rolls around without anything hatching, I'm packing up the empty capsules and sending them back for a refund. UPDATE: It is now day 14 and NOTHING has hatched. I just noticed that this item isn't returnable. So, I'm out $15 (taxes included). I just sent an email to Green Water Farm and I'll update if they reply. UPDATE: 03/02/2023 They finally started hatching about 2 weeks ago, so it took about 4 weeks to hatch. Not everything, but enough to start a culture if they survive. The ones that hatched were in a small bowl with R/O water at room temperature around 72°F (no heat light). I took advice from an old forum thread from someone who cultures them on a large scale and have been feeding them Sweet Potato baby food. About 1 tablespoon into a bottle of water (a regular sized drinking water bottle) and shake it up. I put about a tablespoon of that mix into the culture every day. They actually swarm to it. I also dump it into my daphnia cultures and they're populations are booming. I mix new food every day, and toss the baby food after a few days. I also top off the bowl with water from one of my Daphnia cultures. Every few days, I carefully siphon out 1/4 water with a turkey baster and scrutinize it for baby Moina and replace the water with fresh R/O water. It'll take a hour to do, lol. Once the babies get a little bigger, I'll transfer them into a larger container with an air pump--no stone--just air line with a regulator turned down to a couple of bubbles per second. I also would like to thank Sprite from Green Water Farms. I reached out to tell them that nothing had hatched and he sent me a new pack of eggs. I'll keep them in the fridge until I need to hatch them.

I used maybe 1/10th of the capsule and 0 effort and I have a huge amount of them now. Contrary to other tips, I just used tap water dechlorinated with Seachem Prime in a maybe 2-3 liter random glass cylinder I bought specifically for this purpose and put it next to my aquarium to catch the light I have over it. No heating, 70F ambient temperature. I basically lightly dusted the center of the water with eggs and waited. I nearly killed them by overfeeding, there were like maybe 3 adults swimming around after I overfed and crashed the culture, but now they've repopulated. Some tips: 1. You can't really see the tiny ones that hatch unless you use a phone light over it (don't drop your phone) and look very closely. Mine hatched around day 3 and then I basically killed almost all of them by adding too much crushed fish flakes. I would probably add like a much smaller amount that you would think of whatever food you have, like literally maybe 2 flakes crushed, and also add existing tank water to add some beneficial bacteria in there. 2. If you don't have existing tank water, I would probably start by filling your container with water, dechlorinating it, adding a tiny amount of fish food, adding something like controsoil or fluval stratum or literally just sand, and waiting for algae to grow. Then do like an 80% water change, wait like a day or two, then add the eggs. 3. It's easy to overfeed, so adding a teensy amount of fish food and then some sort of substrate like controsoil is a cheat because it feeds the algae, which the moina eat, which then grow and die and feed the algae, rinse and repeat. 4. Once the container is swarming with moina you can literally just pour the moina into whatever tank you want and then top off your container with dechlorinated water. If the algae looks like it's disappearing rapidly you should probably add a little more nutrients in the form of fish food or whatever and/or lower the moina population. 5. From what I've read, aeration probably won't help and might hurt because the moina and/or eggs might get trapped in bubbles/lifted up too high and stuck against the edge of the tank. I don't think it's needed, especially since moina live in basically puddles/stagnant water in the wild. Might not be a bad idea to blow on the surface/pour off the surface if you notice an oil film forming, though.

I bought this for feeding fry and as a source of live food for my adult fish. I had a spare 10-gallon tank, and filled it about 3 inches above the bottom with old aquarium water, added a heater (laying on the bottom, so that the water was just deep enough to cover it), and then added an air stone. I have the temperature set to the mid 70's I added about 1/2 of one vial of eggs. It took a while for the eggs to sink (about 2 days) but, on day 3 there were several hundred critters in my tank. I fed them a pinch of yeast and a pinch of powdered spirulina mixed with some water and the next morning there are thousands of moina in my tank. I have fed 2 tanks the contents of a net I quickly dipped from my culture and my fish went nuts for it. There are still several thousand moina in my culture, which will be fed the spirulina/yeast mixture every time the water turns clear (the yeast/spirulina mixture makes the water cloudy and slightly green) I plan on doing small water changes every few days by siphoning the water through a net to catch any moina that get sucked out, and feeding them or returning them back to the culture. And, if anything goes wrong, I still have a vial and a half to start a new culture from scratch. For about 10 minutes of setup and 2 minutes every day or so, I should have an endless supply of live food for my aquariums, I consider this to be a great value.

I really tried. I tried distilled water at 4 in high, no luck after weeks. I tried used fish tank water, no signs for the last month. Turned a 10 gallon tank into a green water tank during all this, then tried to hatch the moina in there with no success for 3 weeks. At this point i didn't know what else to do, I watched YouTube videos for roughly 12 hours of everything moina before starting any of this, so I went back to YouTube and found a video in Chinese that used a brine shrimp hatchery. So I bought a brine shrimp hatchery, and everyday I'd turn the air off and check if anything was alive. After 2 weeks of this I gave up. There is a seller on here (Carolina I believe) that sells live moina. I bought it for 6 dollar more than this and it came in 2 day (it said it would take 1 and a half weeks to 2 weeks for delivery) all alive and thriving in the same situations I put the eggs through (except the brine shrimp hatchery, don't use one unless you have brine shrimp eggs). I saw the comments about hatch rates and thought they were just uninformed people. But after all my research and many trials I also failed. Take my comment with a grain of salt, I could've gotten a rare batch of problem eggs. I could've missed the live ones ( however with the live batch I got from Carolina I can easily see them and don't believe I missed any). If you read this, you did your research. Props to you.

added two more stars, and adding and edit. second review so I took fish tank water and tried again. this time I just put it in a jar and stuck it in my window. And a bunch of the eggs. hatched. the first vial that came in this package nothing hatched at all. The second one, however, did. So I poured more of these same eggs into my fish tank. And they hatched as well. so I added two more stars because the second vial hatched. I think the trick is to do it with seasoned water. The first vial I was using only dechlorinated water. this time I scooped it right out of my tank and used that and poured the eggs into my pee puffer tank. I think the eggs are a batch of already hatched eggs and eggs that have yet to be hatched. and maybe that's why you get two vials. either way I have some small crustaceans in my tank and in a jar. going to try to order the larger size. daphnia magna see if I can get those to hatch as well. wish me luck first review Did not hatch at all . Did everything per directions , and nothing . Still have very hungry pea puffers . I dislike having to go to the pet store to buy brine shrimp that are live because I don't have a saltwater tank, three itty bitty pea puffers can only eat so many in one sitting hence me wanting to hatch the eggs myself. I tried three different times with the capsule that I was sent.. nothing .. tried in multiple different tanks, nothing.. so sad about this.. I looked at the reviews and wanted to give this seller a chance, being there was a no return policy I should have never ordered them. Order live and breed them yourself..

I have previously attempted a magma Daria culture with live daphnia air shipped up my address. Cultures are hard to maintain long term and that culture crashed and I didn’t have a second backup culture (as recommended). So when I found these moina eggs I was hopeful. Moina cultures are supposedly easier to maintain. So I used my 4 gallon daphnia bucket filled with decorated water, through in my crushed coral pack ( to keep the PH stable), and sprinkled half a vile of eggs in the water. The eggs float and I suppose the top of the water was 1/4-1/2 covered. My garage is warm (90’s) so I put the bucket in the garage and in less than 12 hours there were signs of life. Interesting I saw some with aquatic worms in the culture along with the moina. I can’t imagine they will survive on the green water I’m feeding but I’m curious as to what type of worms the are. Set my bucket of hatchlings in their new more temperate location in the culture closet with lighting and a slow air bubbler for water circulation, through in a couple of snail to clean up settled uneaten food and feed enough green water to give the water a green tint. Overfeeding are the biggest cause of culture crashes so feed very lightly, just what they can eat in 12-24 hours. 25% Weekly water changes are helpful but challenging. You can combine a magna daphnia culture together with the moina but keep the populations from exploding and it’s always a great idea to keep a second culture going to bridge any culture crash.

First, the directions aren't very clear. Do I use an air bubbler before they hatch? After? And there are so much conflicting information out there. I had a fish bowl laying around, and thought it would be perfect. I have fish, so I used the tank conditioner to clear out any chlorine or chloramine that might be in the water. I set up a heater, a thermometer, and grow lights. I put a few eggs in, and noticed they immediately stuck to the side of the tank. No matter what I did, they stuck to the side. I tried using the bubbles to keep them from sticking, but that didn't work. I tried stirring them, but nope. On day 5 I saw something moving, so I put spirulina in the tank, but I think it died. I think on day 8 I saw another one, but that one died too. I used up a whole capsule on that tank and it was a bust. Ok, after doing some more research, I realized no one was using one of those round fish tanks for their moina, so I found a different fish tank. One thing I read was moina like calcium in their water. I only filled it half way with water. I also had some cuttlebone laying around from when I tried to get more calcium into my snails diet. Spoiler, my snails ignored it. I broke up a little bit of cuttlebone and put it in. I also saw that someone said they had some great success by not using an air bubble, at least in the beginning, so I didn't even bother with it. I put a small amount of eggs in the tank, and on day 3 I could see movement. Instead of adding the spirulina directly to the tank, I mixed it in water and let it sit for a few minutes. I used a pipette to put a little of the water in the tank. I then added more eggs, but not even half. I also got yeast, so on the second day, I mixed a little yeast in some warm water and let it sit for about 10 minutes. I added more spirulina in with the yeast and used a pipette to give them some of this food. I also noticed more babies in the tank. They are all healthy and moving around and having a little water flea party. I am so happy. I already gave my betta some and he was like "Ooh, something is moving!!" I had my betta in with some shrimp, but he was having too much fun hunting them, so I had to move him to a different tank. He looks so bored, so I wanted to give him some live food that he can hunt down. Because moina can live it the same water as my betta, I knew they wouldn't die if my betta couldn't find them all, and can actually benefit the tank since they are filter feeders. So far they are still tiny... I think we are on day 5. They seem to be thriving in the little tank. I think I am going to try a 2 liter bottle as a 2nd "tank" so I can keep a decent supply. Even though I failed with the first batch, I think this is a good value, especially if I can keep them going. I only used about half of the 2nd container. Going to see how big I can get this colony, and save the eggs if the who thing crashes. Only time will tell how long I can keep them going. I will update if I have any major changes. The first 2 pictures are of the failed attempt, but the other pictures are of how many there are after 5 days. They are so small it is hard to get a clear picture, but those little specks are the moina.

None of the eggs hatched this time .

Great product with clear instructions. Love that the manufacture date and best before date is printed on the box, so you know it's not some old stock. I've cultured Daphnia Pulex for couple of years now, and decided to give Moina a try because of it's size. Newborns are smaller than a seed shrimp...it wouldn't surprise me if some of the "none hatched" reviewers simply just didn't see them, and gave up lol It's almost impossible to not overfeed when you're starting a new culture with a small population, so I decided to use green water. I didn't have to feed them for the first week, the green water only started to clear up on the 8th day. Which means the population is now big enough to consume algae faster than it can grow. I'd highly recommend everyone to do the same. Here's some more detail. Setup: One full capsule of eggs, 10 gallon tank with green water @ 26c/78.8f, 16hrs of light per day, big bubbles (1-2 bubbles/s, to keep the algae suspended, and to prevent protein film from forming at the surface) Day 1-2 (Nov 7-8): Nothing happened Day 3-4 (Nov 9-10): ~25% hatched, found 2 fairy shrimps! (Baby fairy shrimps look like a tiny white caterpillar/fluffy floating string...at first I though it was some type of parasite...) Day 5-6 (Nov 11-12): ~60% hatched, found 2 more fairy shrimps :D Day 7 (Nov 13): At this point there's probably a thousand moinas in the tank, most are newborns. It's impossible to tell which of those are hatched from the eggs or reproduced. I'd say 70% hatch rate is a fair estimate. Not sure what I'll do with those fairy shrimps, but it seems I can just leave them in the same tank and feed them just like I would with daphnia/moina. Nonetheless, I feel very lucky considering that quite a few people who specifically bought fairy shrimp eggs couldn't get them to hatch lol

Good hatch rate abt 70 to 80 percent.

Guter Schlupf werde ich wieder bestellen .

Took a chance despite some of the other comments. Glad I did, these started hatching within 2 days. Simple container bought from Amazon, dechlorinated water sat in window full sun in afternoon, usb intermittent air pump. Sprinkled some eggs onto top of water Thursday evening checked today Saturday and loads hatched already. Now feeding on solution of dissolved yeast, fingers crossed I having feeding right. Fantastic product would definitely buy again.