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…..
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.
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).
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 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!
Both the hatchingtank and the breedingtank have been cleaned.
The hatchingtank has been refilled with water from the main tank. The heat is on and now, we wait for a pregnant shrimp to show herself.
I have been looking in the tank for some time this morning, but I have not spotted any larvae.
I will wait for a second opinion tonight, but I fear batch 2 was a failure on day 13 .
This morning I have spotted at least 2 larvae still alive.
One of them was swimming strangely with a bent body and small thrusts. It seems these larvae are larger and more developed to me, but the opinions once again, differ.
We have decided to give this survivor a chance though, we will not start on batch 3 untill either batch 2 is a total loss or growing out in fresh water…
The larvae that were transfered to 25 ppt are all dead.
In the 17 ppt tank we have seen about 3 or 4 surviving larvae. These larvae have developed a little further. They have been seen swimming horizontally, but we are not convinced they will survive tomorrow…. dreaded day 12….
This morning’s check revealed some larvae still alive in both tanks. They do not appear healthy at all.
Tomorrow is day 12. The first batch was totall loss on day 12. From the looks of it, this batch could very well suffer the same fate.
They have been fed according to the new feedingschedule.