miwu

Most likely it is something from the walnut leaf since your sakura shrimps got affected first. The other shrimps got affected later because of lower toxin concentration or contamination at a later time. My guess: 1. This toxic substance only affects neocaridinas. It may have gotten into every tank if you used a pipette to feed the liquid food mix and dipped the pipette into each tank. The "tank water" you used to create the mix can also be the culprit. 2. The toxin was somehow only spread to other neocaridina tanks. For example, you may have two nets, one for caridinas and one for neocaridinas. Good luck. I hope you find the root of this problem and keep up the great work with your amazing tanks.

I keep my tanks at steady temperature throughout the year, and I am still experiencing this. One guess is the ability to sense atmospheric pressure but obviously that is very difficult for a hobbyist to confirm. There are other things like magnetic field, radiation, etc. that animals can sense.

Do you mean got mischlings from TB x TB, Blue Steel x TB, and Pinto x TB crosses?

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If this is just for profit, my vote would be for CRS. As you mentioned, some shrimps are priced higher per shrimp but are more difficult to sell and breed, etc. CRS is easy to breed and almost guarantees a profit. Others may have you end up spending more than you make. But honestly, given that you already know this is not going to make a lot of money, if any, why not choose a type that you'd really enjoy?

They will be fine.

Why does agitation cause CO2 to be released from the water to the atmosphere and not from the atmosphere to the water? I guess it depends on how much carbon dioxide concentration in the water you started with, but there's no reason this level is higher than equilibrium value unless someone purposefully injected CO2?

Just curious why oxygen causes high pH? Also, since there's more carbon dioxide in air, wouldn't aeration cause more carbon dioxide to dissolve in water? I'm sure some chemist can explain this. I'm just confused.

It really sounds like the only problem is the remineralizer. Which are you using? Some are supposed to buffer at a higher pH, or you might have received a bad batch of remineralizer.

I'm a little confused. Right now, you are using Controsoil + Shrimp Daddy Vita + Sinewy cereal + MK Blue Diamond + RO. The pH is 7.2. Early, you were using Controsoil + Shrimp Daddy Vita (?) + Sinewy cereal (?) + "a remineralizer" + RO + wood + plants. The pH was 7.0. After oxygenation overnight, pH was 6.9, KH 0, and GH 5. During your tests: RO --> pH 5.8, TDS 1. RO + wood + plants --> pH 7.0. Controsoil + RO --> pH 7.0. "a remineralizer" + RO --> pH 8.0. Does everything look right? I wasn't sure what you meant when you said "the same pH."

Ah yes, I meant with Caridinas. But even then, we're not having success predicting phenotypic ratios, which really doesn't make sense.

They should, but they don't 100%.