Plankton culture

[Pszemol]

What sieve size can I use to filter out rotifers larvae and
recycle water fertilized by rotifers to feed fitoplankton?

In other words - what is the minimal size of rotifer in
any life form it takes in his lifecycle?

[Richard Reynolds]

> What sieve size can I use to filter out rotifers larvae and
> recycle water fertilized by rotifers to feed fitoplankton?
>
> In other words - what is the minimal size of rotifer in
> any life form it takes in his lifecycle?

first 53 microns is the smallest alive rotifer !

but if you put water from your rotifers into your phyto after using a 53 micron sieve the
phyto will crash

you want to use 2 filters 1 to yank out the rotifers 53 microns what doesnt go thru this
goes back into your rotifer culture,, a second to pull out cilliates <10 micron whatever
doesnt go thru this should go into your reef tank directly itll have food in it.

then you will still need to add fertalizer but none of the nitrate

--
Richard Reynolds

[Pszemol]

"Richard Reynolds" > wrote in message news:UU4gb.44510$gv5.34741@fed1read05...
> first 53 microns is the smallest alive rotifer !

ok, and what about its eggs floating in the water column?

> but if you put water from your rotifers into your phyto
> after using a 53 micron sieve the phyto will crash

That is what is happening now :-)

> you want to use 2 filters 1 to yank out the rotifers 53 microns what doesnt go thru this
> goes back into your rotifer culture,, a second to pull out cilliates <10 micron whatever
> doesnt go thru this should go into your reef tank directly itll have food in it.

I got it. Thanks. I was using 23um as a second filter, but I see it is not enough.
Do you maybe know any good place I can buy nylon sieves <10um cut to size of bulk?

> then you will still need to add fertalizer but none of the nitrate

ok - thank you.

[Richard Reynolds]

> "Richard Reynolds" > wrote in message
news:UU4gb.44510$gv5.34741@fed1read05...
> > first 53 microns is the smallest alive rotifer !
> ok, and what about its eggs floating in the water column?

first off larger than 53 microns, second if you have free floating eggs your culture is
going to crash :(
what comes out of the eggs of healthy rotifers is larger than 53 microns.
nothing you want in a rotifer culture goes thru a 53 micron screen (except there food,
which you should be removing every now and then)

> > but if you put water from your rotifers into your phyto
> > after using a 53 micron sieve the phyto will crash
> That is what is happening now :-)

kinda guessed that but wasnt really sure :O

> > you want to use 2 filters 1 to yank out the rotifers 53 microns what doesnt go thru
this
> > goes back into your rotifer culture,, a second to pull out cilliates <10 micron
whatever
> > doesnt go thru this should go into your reef tank directly itll have food in it.
> I got it. Thanks. I was using 23um as a second filter, but I see it is not enough.
> Do you maybe know any good place I can buy nylon sieves <10um cut to size of bulk?

aquaticeco.com

something like 3' wide sold by the foot.

> > then you will still need to add fertalizer but none of the nitrate
> ok - thank you.

yep :)

--
Richard Reynolds