Brine shrimp hatchety

What does everyone use for a brine shrimp hatchery?
A little rectangle box I got off Amazon… I couldn’t get the round one everyone seems to prefer, I’m in Canada and it looked like it was going to be close to $100, which seemed insane to me for something that is $30 or less in the states. I just leave it on the counter, as it’s warm enough right now, or on top of my tank and let the heat from the lights hatch them. Seems to work well enough for me to strain them out and keep in fridge for a couple/few days.

Definitely a small volume compared to the cylinder ones, and likely a smaller amount than the BRS disk one, as this one is a pretty small rectangle.

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Plastic beverage bottle with a CO2 bottle cap you can use any size bottle the cap fits in. Works perfect and is cheap.

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I use an inverted plastic coke bottle, its ugly but its free and it works as well as anything. There are a few diy set ups on youtube if you check it out.

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This is the easiest one I have used. No air pump needed. I use it in the basement and have a heat lamp hanging above it so the water temp stays mid to upper 70s . I have two that I stagger the hatches on so I have a daily supply when needed. Like many things in the hobby I think is a bit expensive for what it is but I get what seem to be good hatch rates and I like not having to run a separate air pump like many require.
 
I used a couple like the BRS ones and while they work fine and last pretty well, cleaning them between batches can be a bit tedious and you will have to occasionally have to clean the screen in the collection scoop (just h2o2 or dish soap works fine, well rinsed.)

I eventually broke one of the screens so I bought a pair of Ziss hatcheries and they work well, definitely more capacity, easier cleaning, and a little smoother workload but considerably more expensive.

As mentioned, almost any vessel holding water can work (even no aeration at lower densities), so it comes down to durability, ease of use/cleaning, and whether one solution will physically fit in your space (the BRS disk shaped hatcheries, for example, have a large footprint for their hatch capacity.)

Worth mentioning that if you want top notch, reasonably priced eggs, look at Aquarium Co-op's brine shrimp eggs. Lots for a reasonable price, great hatch rate, and in the Ziss hatcheries, the shells all float with moderate to low aeration, so to harvest I just open the valve and stop before the brown layer on the surface.
 
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