If you are going with basic Neos, and the test strips are anywhere close to being correct, then the parameters are *FINE* for non-imported Neo shrimp.
Still, if you are using RO/DI water, which should have 0 GH, 0 KH and low TDS (25 or under, preferably under 15) but the tank is reading 10 GH and KH, then something's going on!
Based on your pre-water results, that doesn't sound like RO/DI water unless they need to change out the membrane or something!
Or maybe you just need the new tests! LOL
The temperature of the water might effect the TDS results, to some degree (typically not huge), but it will not change the GH and KH.
To change ppm to dGH/dKH, you divide by 17.86.
30ppm = ~1.7 dH
40ppm = ~2.2 dH
180ppm = 10 dH
Cherry shrimp do best in the 6-8 range, which is 107ppm to ~145ppm. It is possible for them to be acclimated to lower GH, but typically they have molting problems at lower GH ranges, especially in young shrimp. The same can be said of GH that is too high. I've heard of some being kept in 18-20+ GH!
If you can figure out a target range you want your tank to be at (where it's at now, or somewhere else!) and keep it at that, then find a breeder who keep shrimp in similar conditions, then you will have the best luck in keeping the shrimp happy. If you have to acclimate them, there's a higher possibility of stress and possibly deaths. It's *generally* not a big deal though! (as long as you stick with USA bred shrimp!)
I was kind of dropped head first into shrimp keeping. I had a beta once. Only had it because the fish "died", was dumped into the toilet, sat there for who knows how many minutes and came back to life! And was then brought home to me! I ended up finding another home for that beta! Never been a fish person. My SO on the other hand *LOVES* fish! He's been keeping aquariums for several years now and was in the hobby when I met him. December of 2015, he decided to get into keeping shrimp! No knowledge of how to care for them or *anything*. Just, oh look! A shrimp! Lets get it! (and ended up with a pair)
Male was gone within two days, female berried up before he was gone. Saw one baby from her. Never grew to adult-hood. Introduced shrimp from a local breeder. *TONS* of berried females! (aka 10+ berried females at once) Had maybe 2 or 3 babies survive past a week. Adults slowly "disappeared".
In a quest to find out what was going wrong, I learned about GH, KH and TDS... and learned that we have soft water. Too soft for the shrimp to live in, let alone for the babies to grow into adults! There wasn't enough minerals in the water for them to molt properly... once those parameters were fixed, we finally started having shrimp surviving for longer periods of time and babies finally being able to grow to adults!
Still not a fish person! But I got more shrimp! LOL
I don't think it is ro/di water. Maybe just distilled? I will have to look at the machine next time I go for a refill.
And thank you so much for all your help, this GH and KH thing is throwing me for a loop. I think I already grasp why i need a TDS meter now. Although I never heard of it before starting this post, so thank you again.
I had a love affair with guppies in my very first aquarium, MANY moons ago. I was just so fascinated by the babies. I knew nothing about what they needed when I got them and it turns out that was ok. I had 2 or 3 to start, never bought another... had them for years and years. They didn't need anything from me except java moss, a little food and an occasional water change.
I wish I could pull my hubby into this with me. But he just smiles and listens to me ramble about things like this. Then asks me what it's going to cost before shaking his head. I think the only aquarium thing I've had that he liked was the lionfish I used to keep 10 years ago. He would go over and get feeder fish to feed them whenever his friends came over to see. Lol (lionfish are the salt water equivalent to freshwater Oscars if your not familiar) ...gulp... feeder fish gone
I wish my local stores carried neos... So I could just try to keep 1 alive instead of killing off $70 worth of shrimp (not to mention 10 lives) all at once if I have something wrong.
I don't really know what constitutes an imported shrimp? But I'm guessing they would be more expensive than my 7$ shrimp?
I believe the ones I want are just normal Neocaridina Davidi. But a pretty blue strain of them. They have them at Auqatic Arts which is a USA store. They are actually a sponser of this forum.