As I said the cause isn’t rotifers. They can’t be. I was just pointing out the difference.
It’s common…all you need to do is clean the water so that your moinas in your cultures could live more there…take a dropper and just remove out debris present in the water or either u can even change the water removing the moinas in a muslin cloth.
Are you sure your culture would be free from rotifers!!? after using DC water too!
While transferring the moinas, won’t the rotifers come with the dropper or along with the water?
Even if you are using muslin cloth?
On which day have you observed clumps in your culture?
Please keep updating with your plan of work!!
Exactly I said this will help you in mantaining moina cultures for longer time, I didn’t told they will become free from rotifers, but yes if thought logically we can do it…
As we know the rotifers size is less as compared to moinas, so if we take an appropriate size sieve or muslin cloth in which moinas can be easily hold above and the rotifers including all the water will be separated out … What say about this ? @drishtantmkawale @Spandan_b @pratittodkar
But how are they affecting growth of moinas ?? As we know they don’t cause any harm to moinas then what’s the reason in removing them ?
Have you done this before? If Moina’s are held above then won’t they be out of water. Wouldn’t that harm them?
The only possible reason to remove them would be that they consume oxygen and bacteria if they aren’t harming any Moina directly.
No…I haven’t done this but I had seen this been done few months back by some moina people…well , they don’t get harmed as they are transferred soon back to New DC water.
How long can then Moina survive outside water? Do you have any estimate about what might be the delay between collecting Moina and then putting them back in the water?
Yeah I know they do not cause any harm…
But as @Spandan_b said he wants to keep the culture free from rotifers… he needs to keep a track of the clump formation right? Less clumps less rotifers… easier the job of removing/avoiding the clumps by checking their formation day to day.
No , idont know the time how much they can survive without water , but we can check by keeping a moina out side the water and can see after every 10minutes or so…
Well it happens approximately within 5 minutes. And not a single moina dies as much we have noticed.
Let’s ask him only …what’s your idea behind removing rotifers ? @Spandan_b
If we put a logic then we can say indirectly that as rotifers are increasing in number there would be obviously less amount of bacteria for moina as rotifers eat bacteria. So can even excess number of rotifers too can cause hypoxy condition?
umm @Sjuday2527 i have one question that does rotifers feeds on dead moina or they can harm alive moinas
means i should check daily and remove rotifers present in my culture {if any}.
How will you?? Elaborate how will make a rotifer free moina culture?
Yes, once a moina is dead the rotifers feeds on it but there’s no paper stating that rotifers feed on live moinas too…
can we try to keep 2 rotifers and 2 moinas in a petriplate and check that do rotifers feed on alive moinas?
How will you isolate only two rotifers!?
Oh Come on… rotifers do not harm moinas unless they are more in number i.e. as @Sjuday2527 they will eat up all the bacteria and there would be less food for the moinas, that’s why you see, excess of bacteria, rotifers too can harm moinas.
Exactly @drishtantmkawale thanks for the backup …well now I’m not understanding whether I’m unable to put my thoughts clearly or not 
