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Brine Shrimp Question


RyanR
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Using the small vial of eggs I got the first time from the Co-Op, I didn't see nearly that many shells.  I guess that's what they are talking about when they say 90% hatch rate.  Huge difference!  Great job @Cory!

Edited by RyanR
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I also was surprised by that top layer. However, I do not have any shrimp. It's now 48 hours and barely any hatching. Any ideas what I'm doing wrong?

 

My Setup:

1.5 TSP Aquarium COOP Eggs

Well water (Hardness, yes)

PH is 7.5 to 8.0.

1 L of water 

2 TBS of Aquarium Salt

Pinch of baking soda

 

This is my 2nd batch, 1st batch I got maybe 30% hatch rate.

 

Edited by Billfromtx
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I use a construction type clip-on  lamp with the silver housing and a 60W incandescent bulb.  You could also use a flexible desk lamp.  I figured out that I needed to be about a foot away to keep the water at 80°.

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3 hours ago, Billfromtx said:

I also was surprised by that top layer. However, I do not have any shrimp. It's now 48 hours and barely any hatching. Any ideas what I'm doing wrong?

 

My Setup:

1.5 TSP Aquarium COOP Eggs

Well water (Hardness, yes)

PH is 7.5 to 8.0.

1 L of water 

2 TBS of Aquarium Salt

Pinch of baking soda

 

This is my 2nd batch, 1st batch I got maybe 30% hatch rate.

 

What's your water temp?  I keep mine about 80° and I use @Dean’s FishroomFishroom method in this video.  I also only use 1 tsp of eggs, 1L of water and 2 tbsp of salt.  You are close enough with your recipe where your eggs should be hatching if your temp is ok.  To a certain limit, the lower your temp, the longer it will take your eggs to hatch.

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2 minutes ago, Billfromtx said:

I think I may have had light source to close. And cooked the eggs? I have no way to measure temp at this time.

Using a clear 50w incandescent that I use on hotbox for warming oil clay. Had it probably 3" to 4" backed off to 8".

Willing to bet things got too hot. I had been using a 60w incandescent in a clamping work light and with an ambient temp of 72F I had to keep it ~12" away or my temps would shoot well over 86F. You might consider snagging a cheap infrared thermometer off Amazon. I use mine whenever "close enough" is OK.

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6 minutes ago, Schwack said:

Willing to bet things got too hot. I had been using a 60w incandescent in a clamping work light and with an ambient temp of 72F I had to keep it ~12" away or my temps would shoot well over 86F. You might consider snagging a cheap infrared thermometer off Amazon. I use mine whenever "close enough" is OK.

Exactly what he said...lol.  My ambient temp is about 73 or so.  I thought originally I had to be only about 4 inches away and I was close to 90.  Those lights get pretty hot.  I end up being about a foot away, maybe 14 inches. 

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I leave mine in the bathroom cupboard without light or heat and only use the air bubble that came with the ziss hatchery. I started with the light but eventually took it away. Now they hatch in the dark at what ever the room temp is and I get good hatch rates. When the house is colder it can take 36 hours to hatch, warmer means 24 hrs. We live in Colorado and leave the temp around 62-68 in the winter. I got lucky I guess.

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