Need help for setting up CRS tank

[Ryan Peh]

Oh I didn't realise blue bolt is a part of the CRS species! Hmm can I mix cherry shrimps with the blue Kk shrimps? And what exactly are blue Kk?
Tiger blue shrimps?
Royal blue shrimps?

[Urban Aquaria]

Oh I didn't realise blue bolt is a part of the CRS species! Hmm can I mix cherry shrimps with the blue Kk shrimps? And what exactly are blue Kk?
Tiger blue shrimps?
Royal blue shrimps?

Those "blue KK" being sold at many LFS now are basically blue variants of cherry shrimps (some places also call them "blue diamond")... they also have different grades of blue too, the darker blue ones being considered higher grade variants.

You could mix the blue variants with red variants of cherry shrimps, the effect will be the same as mixing different color and grades of cherry shrimps together, they will crossbreed and you'll tend to eventually get a mixed percentage of colors and mixed grade offspring.

[Ryan Peh]

I just scrolled through a list of neocaridinia.
I really like the red Sakura shrimps, blue rilli and the dark blue Sakura shrimps.

Will their offsprings gradually go back to their wild colour if I mix them??

I can also just cull those lower grade offsprings and put them into my 4ft tank as cleaning crew instead right! (Provided they don't die)

[Urban Aquaria]

I just scrolled through a list of neocaridinia.
I really like the red Sakura shrimps, blue rilli and the dark blue Sakura shrimps.

Will their offsprings gradually go back to their wild colour if I mix them??

I can also just cull those lower grade offsprings and put them into my 4ft tank as cleaning crew instead right! (Provided they don't die)

Well, the reason why we can get these shrimp variants with strong color and patterns is because they were selectively line bred continuously within the same color and pattern to achieve those results.

When mixing the different variants together, parts of their genes that determine color and patterns will also mix and those colors and patterns will start to "dilute" (basically the opposite of selective breeding), so you will tend to see the colors weaken and regress back to lower grade/original wild coloration over multiple generations.

If you don't mind that effect, and prefer to enjoy seeing a variety of different color and patterns in the same tank, then its fine to mix them. I know a few people who keep a "united nations" of different colored shrimps in their tank and it can look very interesting. The focus will be more about keeping a colorful mix of shrimp for a period of time, rather than maintaining and improving specific coloration/patterns.

[Ryan Peh]

I would love to replace cherry shrimps with CRS instead and then keep them with Blue variants of neocaridinia but CRS is impossible to keep with my tank condition and my set of incapable shrimp keeping skills HAHA

[Urban Aquaria]

I would love to replace cherry shrimps with CRS instead and then keep them with Blue variants of neocaridinia but CRS is impossible to keep with my tank condition and my set of incapable shrimp keeping skills HAHA

Actually you can still try keeping CRS in your tank conditions without chiller... it may not be the most optimal conditions for them and breeding may be less frequent, but it's possible that they can still survive for quite a while.

Personally i've kept low-grade CRS in non-chilled planted tanks with my cherry shrimps, and some of those CRS were able to live for many months (though they didn't manage to breed, so as individuals gradually die off, their population slowly disappear over time).