Moina Macrocopa

I thought this purchase was a flop. I read the eggs would hatch in 24 hours but they actually took 72 hours to hatch. I used half of one capsule in a 2.5g tank partially filled with siphoned tank water from my shrimp and pea puffer tank. I stirred the tank and squirted the eggs off the sides twice a day. I have snails and a container of val in there as well. A slow air tube for some water movement. First feed was a spirulina mix. In a few days I hope they grow big enough to feed my pea puffers and betta.

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 read every review I could before I purchases this. I couldn't decide if I wanted to go with a live culture or catch them on my own. I decided to buy this so that I could control how many I hatched at once. I really don't understand all the negative reviews. If you do a little research this is the easiest thing in the world to do. I don't know how you could fail. In 24 hours I had thousands of Moina in my aquarium. No special lights, no air stone, nothing. I placed a tupperware container with about an inch and a half of tank water in it and set it inside my 5 and 1/2 gallon aquarium. I set the temperature at 78°. I started it yesterday at 3:00 p.m. and at 4:00 p.m. today I have so many I cannot count them. I will include pictures for everyone just to show what worked for me. And I suppose some people can get a bad batch but if you do everything right I don't know how you can lose with these. I'm only cropping them for my guppies as live food. But it is fun to watch them jump around the tank. Thanks Green Water Farm.

I've never kept or hatched anything like these before, so i decided to split one of the vials into two separate jars and keep the second vial in reserve if i messed up. After 3 days, one of the jars has started hatching!!! Now to try and keep them alive...

This product did not hatch at all. I made several attempts using a variety of water sources, including RO water, distilled water, spring water, mineral water, conditioned aquarium water, and even regular tap water. I followed the instructions and left the eggs for days and even weeks, hoping to see some sign of hatching, but nothing ever emerged. After multiple unsuccessful attempts, I concluded that this particular batch was not viable. For comparison, I have successfully hatched Daphnia eggs from the same brand, and those hatched readily in nearly all of the water conditions mentioned above. Based on my experience, the issue appears to be with this batch of Moina eggs rather than the hatching conditions.

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.

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.

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..

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

Eggs are not hatching even after a week, money wasted.

Good hatch rate abt 70 to 80 percent.

Costo troppo alto, nessuna schiusa , non accettano la mia richiesta di rimborso, sono deluso

I ordered and it arrived at me in 10-11 days. Its the 2nd time i ordered this. The first time eggs hatched in 3-4 days (like 50-60% at least). The second time eggs hatched within 20-25 hours, way faster and like 80-90%. Do NOT storage the eggs outside in a closet, after 1 year ZERO eggs is going to get hatched. Store your eggs in fridge (6-12 oCelsious is a good temperature to strore, anything like 25 Celsious eggs are going to die in less that 12 months)