Help Me Get Rid Of Round Worms.

My tank has been infested with roundworms. At first there were a hand full and I changed the tank as much as I could. I know they can live in the rocks and when I clean they float in the water. I just did a 50% change on my 75 gal because they got so bad and now there are thousands that I can see. How can I get rid of them.

 

I'm assuming you are talking about detritus worms. What do you have in your tank? The only time I had an issue with them was when I was raising zebra danio fry...even with daily water changes and a bare bottom tank. Once the fry got big enough to eat them I never saw them again.
If you're desperate to get rid of them I've read that you can treat the tank with praziquantel. But they're beneficial to the tank and population is determined by how much you're feeding (or over feeding) your fish. A good gravel vac and big water change can get rid of quite a few of them too.

 

I'm assuming you are talking about detritus worms. What do you have in your tank? The only time I had an issue with them was when I was raising zebra danio fry...even with daily water changes and a bare bottom tank. Once the fry got big enough to eat them I never saw them again.
If you're desperate to get rid of them I've read that you can treat the tank with praziquantel. But they're beneficial to the tank and population is determined by how much you're feeding (or over feeding) your fish. A good gravel vac and big water change can get rid of quite a few of them too.

I have a female Oscar in the tank. She is full grown and I’ve been doing at least 5 gal a day minimum for the past week. I have really good filtration and nothing seems to be getting rid of them. In the numbers that they are in, will they Adventist hurt my fish or are they completely harmless to her.

 

They're harmless to your fish. Just aweful to have to look at. Mine were actually living in my HOB media. What is happening is that there has been a population explosion due to increase in available food for them...over feeding is usually the case. Once you get the right amount to feed down the population will self regulate to where you rarely or never see them. Do a thorough gravel vac and water change then adjust how much you're feeding. If you are completely disgusted with it you could remove the gravel completely. Adding a pleco might help a little. I would think they would have to eat some of the worms though I'm not sure which type of pleco would be best for that. Also not real familiar with Oscars so not sure if they are tolerant of plecos?

 

They're harmless to your fish. Just aweful to have to look at. Mine were actually living in my HOB media. What is happening is that there has been a population explosion due to increase in available food for them...over feeding is usually the case. Once you get the right amount to feed down the population will self regulate to where you rarely or never see them. Do a thorough gravel vac and water change then adjust how much you're feeding. If you are completely disgusted with it you could remove the gravel completely. Adding a pleco might help a little. I would think they would have to eat some of the worms though I'm not sure which type of pleco would be best for that. Also not real familiar with Oscars so not sure if they are tolerant of plecos?

Thanks. I appreciate your advise. I have some pleco growing in my 55 gallon and hopefully they are big enough now to be in with my Oscar. I tried plecos before but they get eaten. And I have 2 catfish in there now to try to help too.

 

Catfish should do the trick!