I am going to rear marine fish larvae in flow-filterd rearing tanks. Rotifer is taken as the living food initially. I' m wondering how can I get the redundant rotifers out of the tanks if the filters do not quite work. Or shall I ignore the redundant rotifers and just replace some water daily?
It is difficult to be sure to remove all rotifers. Fitration can be efficient for small volumes of water but it is difficult to filter large volumes on very fine mesh.
To heat the water to near boiling can be a solution.
HI
You can use the organisms that feed rotifer of course if it not be difficult for fish
Hi Zhe Li.
Try to provide rotifers in different doses being sure that they are completely removed from the tank before adding the next one to larvae. Adjusting the amount of rotifers included in their diet (toguether with filtration system) you should minimize the redundant fraction.
Best regards.
S
To remove out the extra rotifer, if you are sure these is the best option, the most simple and efficient model it is to increase the flow of water renewal. Due to hydraulics of the tank and the laws under operation, you almost need change four to five times the amount of water. To be sure, you can also eliminate half of the volum, refill again and repeat the operation.
My personal opinion, tray to adjust the amount of rotifer as maxium and forget the rest.
I think if there were not algae(like Nannocholoropsis and ...as food for Rotifers) in your tank,the extra Rotifers will dwindle (gradually omit). and do not reprodce
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