Is My Way, To Raising Brine Shrimps,
In Numbers, Of Around 1,000-2,000 per litre.
took me some 30 years before I could truely say I was able to produce, ( more
or less at will ) B/shrimps in large
enough numbers, to make it worth the effert, and at a cost that didn't hurt my pocket,
enough said, this Is not going to be a long winded narrative, of my years of research, which have mostly
ended up in a cul-de-sac
So here we go.
First choose your Brine shrimps eggs, there are many types
by far the best for mass production, in my opinion, is the Artemia franciscana ... a small egg form.
Choose your salt, it has to be cheap, so plain cooking salt will do, although Table salt works equally as well,
now as for a hatching container, again any will do, I personly use a 1 Litre jar 3/4 filled with tap water, and as my water is v/soft, I add a little calcium carbonate powder.
To this jar I then add 1/3 tsp of B/shrimp eggs, salt and one airline, ( no diffuser ) and depending on temperature 15 - 32c, hatching should occur within 16-72hrs.
Now that parts finished, lets get on with the main Job of raising them.
At the same time you set up your B/shrimps hatchery, also set up your raising tank, and the size you choose depends of course
on the amount of shrimps you require, I tend to use 15 - 20 Litre tanks,
and with the addition of the correct dose of compounds (see below ) plus two airlines ( Again no diffusers ) mature culture water
for 2 to 4 days before use.
Salt mixture for the hatching
and raising Brine Shrimps
10gm to the Litre of cooking salt or Table salt, ( both work ) = SG 1.006
10gm to the Litre of Magnesium sulphate ( Epsom salts ) = SG 1.005
1gm to the Litre of Sodium Bicarbonate = SG 1.0005 = ph 7.5 - 8
total SG of 1.012, approx
Try aim for a SG between 1.008 - 1.012 .... For Great Salt lake eggs.
SG of 1.016 - 1.020 for Russian eggs.
Note, ...No need for exspensive marine salt.
As I have said my tap water is soft, so I add an additional compound of powdered lime ( Calcium Carbonate ) at a
rate of 1gm per 1Litre,
unfortunately, the powdered calcium carbonate may make your water a little murky untill the powder settles down.
potential shrimp yields.
The 1/3 teaspoon ( approx 1gm = 300,000 ? ) of hatched shrimps, should
after the normal 80% + losses through out the growing period,
produce more than enough to fill a 15-20 Litre container,
with approximately 1- 2000 Shrimps to the Litre been achieved,
as growth is very slow between 2 & 10 days .
great care must be shown to keep polution down,
partial water changes on days 4, 7, 10. 14. would help.
Airlines must be sitting
on the base and in a corner of the container, so producing a good all round
of rotating food & surface agitation.
I also find the addition of an actively mature nylon mop, near the airline,
greatly helps with the coagulation of waste, and assist in your nitrification cycle.
action for feeding, once your newly hatched B/Shrimps nauplii, are added to
your culture tank.
Your first feed on day one, ( after hatching ) will be liquid spirulina, administerd by using a 3ml pipette till
you have acquired a light green colour
The following morning ( if needed ), add more liquid spirulina to your culture, till you have again
achieved a nice light green tecture,
Now in the evening of that same day, lightly dose the culture from a freshly made up feed of liquid yeast,
( That is made up from 3gm of bakers yeast to 500ml tap water )
by using 2ml at a time from a 3ml pipette, add enough to lightly discolour your culture a light milky shade.
At a guess, 3- 4ml of liquid yeast per gallon.
The next day follow the same agenda, spirulina in morning and yeast in evening,
keep this action up for approx 5 days, then switch to feeding only liquid yeast on both mornings & evenings
continue this action untill your shrimps have reached a medium to adult size, this should be within 14-30 days
at a temperature between 20-30c.
If your culture starts to give of a smell of ammonia,( and it might ) due to the lack of good filtration, plus look a bit murky
revert back to feeding Spirulina for one to two days, and change one third of the old culture water for fresh.
A good culture should over time give out a slightly earthy smelling odour ... Not ammonia.
also keep an eye on your PH it should be between 7-8 there abouts.
So keep your bicarbonate handy.
( Spirulina mix
Add a level tsp of fresh
powdered spirulina into a 500ml litre jam jar of fresh water from your tap,
replace cap on the jar, and shake well untill we have a frothy surface.
( Always shake your jars before use. )
When not in use, keep both of your liquids, spirulina & Yeast in a fridge.
One last thing, watch out for evaporation, and replace if needed, with good fresh clean water, ( not made up cuture water )
( a cover lid may help here, if one is used keep a check on your ph for Co2 build up )
Note ... If you do have
chloramine in your tap water, can I suggest, you use the white powdered compound
called Sodium Thiosulphate,
this will quickly nutralise your chloramine problem, even at a low dose of 1gm per 30 Litres of water,
and it will not harm your shrimps.
And that they say, should be that.
Ps ... One thing more, I
add the waste water from my hatching jar in to my culture tank,
after filtering out all the heavy waste. ( eggs shells + dead eggs ).
Think about It !
I except no responsibilities for any problems you may encounter,
as these are just the rambling of a mad man
and will be up to you to decide your own fate.