GreenWaterFarm Moina Macrocopa Eggs (Water Flea) Live Fish Food for Hatching and Culture Suitable for Feed Betta Fish

I saw a few reviews saying these eggs didn’t hatch, but I can confirm: they absolutely do hatch if you follow the right setup. I had Moina swimming around in less than 24 hours! Please read this before you try—it will save you frustration and wasted eggs: 1. Use clean, dechlorinated tap water. Avoid pure RO or distilled water—they lack essential minerals. Tap water is perfect unless your water is from a well or has very high pH. If your water is too alkaline (above ~8.5), you may have trouble hatching. 2. Water depth: Keep water at about 3–4 inches deep. Shallow water improves light penetration and oxygen exchange. 3. Light is critical: Place the container near a window with good indirect sunlight, or use a daylight-spectrum bulb (white light) about 3–4 inches above the container. Aim for 12–16 hours of light daily. I used an old aquarium white LED light. Yellow light is not as good. 4. Temperature: Around 75–85°F works best. Room temperature worked well for me. 5. Let the eggs float: Floating is normal and helpful! Don’t try to sink them. The eggs hatch best near the surface with light and warmth. 6. No aeration needed: I didn’t use any air pump or aeration, and they still hatched fine. Aeration might help, but it’s optional. 7. Don’t overdo the eggs! I used an entire capsule because of some other reviews, and it was way too much. I wish I had not done that. Half of one capsule is plenty to start a good culture. 8. Be patient: Hatch time is usually 24–72 hours, but I saw mine start moving in under 24! 9. Feed once they hatch: Use chlorella powder or pure spirulina powder, dissolved in water. Start with a very small amount—just enough to lightly cloud the water. Don’t overfeed! I’m really happy with the results. If you follow these steps, you should get a great hatch too. Don’t let the negative reviews discourage you!

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 don't often write reviews but since I was very much on the fence about getting this, I figured a positive followup could be helpful to others. This is not the first time I bought daphnia, though it is the first time I bought eggs. My original daphnia cultures crashed a few times and I was pretty much assuming that I was going to run out before I could learn to make a self-sustaining culture. The other reviews saying that it is a lot of eggs are correct. I used probably 2/3 of one capsule (two come in the package) across three different containers. I have green water ready to go. I tried placing in the eggs across the three (as an insurance policy against crashing). Two containers are plastic 4+ gallon bins, and one is a gallon+ glass jar. I've read surface area and volume are helpful. I don't have aeration. After 3 days of not much of anything happening, I put a seedling heat mat under one of the bins. The mat has kept the temperature in the mid to upper 70'sF. Otherwise the temps have been probably upper 60's to low 70's. The bin with the heat showed substantial hatching within 24hrs while the bin without the heat showed only a little. I've since added heat to the second bin and the hatching seems to be picking up. Sure, it's possible that it was something else, but the instructions do suggest hatching between 77-90F, and it worked. I plan on adding air later. I just don't yet have the equipment for it. I like the eggs because I can keep some in reserve in case I crash all my cultures and need to start over. The price was right, and it's working so far.

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.

4 different condition cultures, zero hatch rate, YOU CAN'T RETURN These. AVOID! I have been an aquarist 40 years, these cultures are garbage. I am not taking a chance this was a one off unless the company sends fresh. Years ago these were reliable, they are increasingly GARBAGE cultures. Why don't you take responsibility if the customer can provide references to their experience hatching out and provide photos /video of the setup? Never again will I buy any culture from you.

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.

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..

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 .

Good hatch rate abt 70 to 80 percent.

I used half of the capsule on a sump with plants, algae, and soil but it isn't hatch well until sufficient lighting is added. The hatching process needs close monitoring, because the first creature hatched is a hydra, which would have eaten all the larvae if left alone. After a couple days, the moina egg started hatching, but I will continue to monitor to see if anything besides moina are hatching. So far I am happy with the purchase, but would have expected better pest control for the price I paid.

Guter Schlupf werde ich wieder bestellen .

The packet contains 2 vials of eggs.i was disappointed at first as this was my first time raising moinathe hatch rate was a lot more than I was expecting and the 10 litre aquarium seemed full of little moina pulsing around.i immediately broke out another larger container and split the hatch.These eggs had been in my fridge for a couple of months waiting for right time as i thought i would need nurturing until a had a big enough colony.i didnt.t I’m feeding them to my fish straight of the bat. .they hatched in about 36 hours(23celcius).I’m going to order more so I always have a go to back up.