Jennifer Luna Posted December 7, 2020 Share Posted December 7, 2020 Help with hydra? I have a 35 gallon tank with 2 angelfish , live plants and a Chinese algae eater. Noticed a few hydra today. Any recommendations on fish added to my aquarium that may eat the hydra or is chemicals the only route? Since I am not breeding them is it really a big concern? Newbie here 😐 Link to comment Share on other sites More sharing options...
MickS77 Posted December 7, 2020 Share Posted December 7, 2020 If you search "hydra" on the forum you'll find plenty of threads discussing them and routes to take. Link to comment Share on other sites More sharing options...
ange Posted December 7, 2020 Share Posted December 7, 2020 Hydra are generally only a major concern to brine shrimp/daphnia. I've had both green and white varieties (though I currently only have a small amount of green). The population tends to grow when there is an abundance of microfauna or tiny live food, and they've never caused any death with my small fish or inverts. Link to comment Share on other sites More sharing options...
Steph’s Fish and Plants Posted December 7, 2020 Share Posted December 7, 2020 I recently had a ton pop up in a tank with just hatched celestial pear danios fry, any concerns with that? Link to comment Share on other sites More sharing options...
ange Posted December 7, 2020 Share Posted December 7, 2020 I'm personally not concerned with hydra. I haven't seen anything "go missing" in any of my tanks that have them. The populations started to go down naturally when I had other things competing for the same food source (seed shrimp and daphnia). Some fish also likely nibbled a few off the glass. Link to comment Share on other sites More sharing options...
Daniel Posted December 7, 2020 Share Posted December 7, 2020 I agree with @ange. I have hydra and I have fry. I have never seen a hydra catch a fry. I bet it could happen but I have never witnessed it. If I feed a lot baby brine shrimp or baby Daphnia my hydra populations explode. When I stop feeding baby brine shrimp and baby Daphnia, the hydra disappear. I have seen swordtails and guppies pick at them and my sparking gouramis eat them too. Personally I wouldn't put chemicals in an aquarium to get rid of hydra. I think they are pretty cool. Here is some video I shot recently of hydra eating baby brine shrimp. 4 Link to comment Share on other sites More sharing options...
gcalberto Posted December 7, 2020 Share Posted December 7, 2020 5 hours ago, Jennifer Luna said: Help with hydra? I have a 35 gallon tank with 2 angelfish , live plants and a Chinese algae eater. Noticed a few hydra today. Any recommendations on fish added to my aquarium that may eat the hydra or is chemicals the only route? Since I am not breeding them is it really a big concern? Newbie here 😐 Honestly, it's not a big problem, but it's extremely easy to deal with as well. Buy a dog dewormer named panacur C and apply 1 drop per 4 gallons. In 24h all hydra should be dead. This is extremely safe and does not harm fish, plants, snails or shrimp, but it does kill planaria as a bonus 😁 Link to comment Share on other sites More sharing options...
NicoleHnVa Posted December 8, 2020 Share Posted December 8, 2020 Fenbendazole (that dog dewormer) will kill nerite snails for sure. I’ve totally killed nerites like that. Didn’t hurt the bladder and ramshorns tho. Link to comment Share on other sites More sharing options...
Maggie Posted December 10, 2020 Share Posted December 10, 2020 Here are some pics of my new baby cardinia shrimp stomping over hydra without a care in the world. I think it scooped up a piece of it. I'm totally amazed - the shrimp are only about 1/8-1/4" in length. 1 Link to comment Share on other sites More sharing options...
Hobbit Posted December 10, 2020 Share Posted December 10, 2020 I used to have a ton of hydra in my 55 gallon. It didn’t seem to bother my cherry shrimp. It’s possible some of their babies got nommed, though I never saw it. Then I got my two honey gouramis and within two weeks the hydra was gone. They loved that stuff! I’m not sure they’d go well with angels though. Honeys are really peaceful and I think the angels would harass them. Link to comment Share on other sites More sharing options...
Maggie Posted December 10, 2020 Share Posted December 10, 2020 @Hobbit, the honeys left the shrimp alone? I could have a honeys in my tank in lieu of pearls, which I'm told will chow on shrimp. Gouramis are one of my favorite fish. There's a giant gourami on display in my LFS. 1 Link to comment Share on other sites More sharing options...
Hobbit Posted December 10, 2020 Share Posted December 10, 2020 My honeys haven’t bothered my shrimp. The male has chased shrimp out of his territory when protecting eggs. But I have shrimp in my honey fry grow out tank and I’ve never seen them even blink at them. They will nibble at the snails antennae though. I should put out the caveat that the shrimp in my 55gal have been disappearing. But I’m 90% sure that’s the yo-yo loaches’ fault, not the honeys’. 😬 1 Link to comment Share on other sites More sharing options...
katesadilla Posted January 13, 2021 Share Posted January 13, 2021 On 12/7/2020 at 3:31 PM, gcalberto said: Honestly, it's not a big problem, but it's extremely easy to deal with as well. Buy a dog dewormer named panacur C and apply 1 drop per 4 gallons. In 24h all hydra should be dead. This is extremely safe and does not harm fish, plants, snails or shrimp, but it does kill planaria as a bonus 😁 Do you have a link where you can get liquid? I can only find it in pill form. Link to comment Share on other sites More sharing options...
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