Infusoria?

[GhostFeather]

Yes,it does have a smell to it,I just skim the gunk off the top,let it set for awhile and suck them up with a turkey baster.
Then I squirt them into some clean treated water and feed to the fry.
I had 1 turn completly black one time,talk about stink!!!!
I dumped it in the yard and sprayed it with the hose.
I blanch my lettuce,then add it to the water.
If you use water from an established tank and boil it first you will kill the infusoria that are allready in the water.
When you blanch the lettuce,doint boil it,after the water comes to a boil shut it off and blanch your lettuce,a short time in the water untill it is limp will do.

[MattsBettas]

Ok! How do you skim off the skin?

[GhostFeather]

I just use a small net,just run it across the top gently,just enough to get the rotten lettuce and some of the surface film.
Let it set and settle for about 30 mins..
Hold a light to it,you will be able to see the cloud of infusoria,that way your not sucking up a lot of usless water.
If you have one of those infusoria net,I think they are called micron filters,you can filter them and rinse them( I might have to get one).
If not,I take some water,1 cup,put it in a quart jar and squirt your infusoria into it,then using an eye dropper,squirt it into your fry tank.
I know,it is alot of work,but then raising Betta Fry are alot of work!!