Pszemol
September 17th 03, 06:11 PM
"Richard Reynolds" > wrote in message news:150ab.57617$Qy4.2517@fed1read05...
> what kind of filtration are you using on your grow out tanks?
> is the divider water tight or just something to keep the adults out?
> is the larval side square bottom
> how are you feeding it ??
My grow out tank is not connected in any way with the main tank...
I have divided it with perforated plate (small holes sparingly
over the whole surface). On the right side I placed sponge
filter with a lots of air bubbles agitating water. On the
left side of the divider I placed larvae. The tank is bare
bottom, square and the divider was placed to not destroy
larvae with too strong water movement. Water on the left side
was calm. I do not keep adult shrimps in this tank - I let
them breed in the main tank and I syphon larvae out.
There was a point light source from the top (20W halogen bulb)
and larvae were crowding under it - not disturbed with water
movements - it made easy feeding and also cleaning the bottom
of the tank - all alive larvae were near the water surface
attracted to light so I could syphon detritus out and dead
larvae from the bottom.
I wanted to know if the gases circulation was sufficient but
as I said, test kit was useless in that matter.
Filtration was designed as a small sponge filter supported
with a one litter of Ehfisubstrate Pro - both placed on the
right side of the divider.
I was feeding larvae with live algae (tetraselmis) and live
rotifers but last attempts were not succesful in keeping
larvae alive.
Several problems experienced. Mainly two of them:
water pullution, exhausted/crashing food cultures etc.
After two weeks all larvae were dead.
I am doing this in my spare time "after work" in a very limited
space of my small apartment (in the kitchen!! :-)) so I was never
giving this enought time and care to succeed. So I did not even
approach the ultimate problem: larvae settling trigger - I know
this is already figured out but info is protected for commercial
purposes... If you know anything about details related to that
issue I would be glad to hear from you.
> what kind of filtration are you using on your grow out tanks?
> is the divider water tight or just something to keep the adults out?
> is the larval side square bottom
> how are you feeding it ??
My grow out tank is not connected in any way with the main tank...
I have divided it with perforated plate (small holes sparingly
over the whole surface). On the right side I placed sponge
filter with a lots of air bubbles agitating water. On the
left side of the divider I placed larvae. The tank is bare
bottom, square and the divider was placed to not destroy
larvae with too strong water movement. Water on the left side
was calm. I do not keep adult shrimps in this tank - I let
them breed in the main tank and I syphon larvae out.
There was a point light source from the top (20W halogen bulb)
and larvae were crowding under it - not disturbed with water
movements - it made easy feeding and also cleaning the bottom
of the tank - all alive larvae were near the water surface
attracted to light so I could syphon detritus out and dead
larvae from the bottom.
I wanted to know if the gases circulation was sufficient but
as I said, test kit was useless in that matter.
Filtration was designed as a small sponge filter supported
with a one litter of Ehfisubstrate Pro - both placed on the
right side of the divider.
I was feeding larvae with live algae (tetraselmis) and live
rotifers but last attempts were not succesful in keeping
larvae alive.
Several problems experienced. Mainly two of them:
water pullution, exhausted/crashing food cultures etc.
After two weeks all larvae were dead.
I am doing this in my spare time "after work" in a very limited
space of my small apartment (in the kitchen!! :-)) so I was never
giving this enought time and care to succeed. So I did not even
approach the ultimate problem: larvae settling trigger - I know
this is already figured out but info is protected for commercial
purposes... If you know anything about details related to that
issue I would be glad to hear from you.