Archive for January, 2009


Sunday, January 18th, 2009

2 pregnant shrimp in the main tank. All tanks have been cleaned, but if we have no clue to what goes wrong… there is no point in trying.

Total loss – again

Thursday, January 15th, 2009

Thuesday we found no larvae alive in the 17ppt tank and only 4 in the 25 ppt tank. This is substantially less than would have survived at 35 ppt.

It’s back to the drawingboard.

Salinity unstable

Wednesday, January 7th, 2009

Salinity measurements this morning proved 20 ppt in the 17 ppt tank and 28 in the 25 ppt tank.
The salinity has been lowered to 18 ppt and 26 ppt.

We have very unstable salinity, so either the water is evaporating at a frightning rate or the meeter is less brilliant than we thought.

Salinity is rising, a lot

Tuesday, January 6th, 2009

After carefull inspection the shrimp in the 17 ppt salinity tank are not dead, indeed they are alive and kicking!

Measurements today did prove the salinity in both tanks is rising. The 17 ppt tank was at 22 ppt, the 25 ppt tank was at 29 ppt.
Both tanks have been covered a bit extra, but we really need a coverplate to keep salinity stable. From now on: measuring every day…..

Mayor loss in the 17ppt

Sunday, January 4th, 2009

A few larvae are alive in the 17 ppt tank. but not nearly as many as were transfered. I am unsure as to the cause of this.
Yesterday the larvae have been dumped into the salt water as always. The only difference is the heater. Since the hearter was not there the water in the 17ppt tank was colder than usual when the larvae went in.

There is no point in splitting the batch in the 25 ppt tank again untill the heater has been found or a new heater was bought.

Larvae transported to salt water

Saturday, January 3rd, 2009

After carefull deliberation we have decided to split this batch from the get go.

Some have been put in a breedingtank with a 17 ppt salinity, the others are at 25 ppt salinity.
Somehow one of the heating elements got missing so only one tank is heated at the moment. A new heater will be bought at first opportunity…. (probably monday).

First larvae were spotted!

Friday, January 2nd, 2009

It seems the one you catch first, hatches first!

One shrimp has hatched her eggs, the other one hasn’t yet, but seems ready to burst. The breedingtank will be prepared today with 17ppt salt water.

2 schrimp in the hatchingtank

Thursday, January 1st, 2009

2 schrimp were caught and put in the hatchingtank. The hatchingtank had to be cleaned first. A very disgusting surfacefilm had formed….

One of them looks ready to hatch, the other was merely the one we caught first….. waiting for the 3rd batch to hatch! Nice start of the new year!