I think I am about to give up on keeping shrimps as a hobby. I bought this awesome batch of shrimps from this website, and everything arrived in perfect condition. I netted out all shrimps and placed them into my 20L gallon tank. I netted out all of the none RCS shrimps, but with varations of blue and red Neocaridina species crosses from my tank and placed them in a 2.5 gallon tank with crushed corals as a substrate and a nice piece of driftwood with java moss attached to it (tank cycled of course). A day later, I bought a green hedge plant from Pets'mart and placed them in my 20G tank. The next day (yesterday), I found several of my shrimps have died already. Prior to that, I have already placed a small handful of crushed coral in a filter mesh bag, and placed them inside my filter (Emperor, and I also have a sponge filter inside the tank as well, from Elite - double sponge - air driven) to buffer the pH of my tank (7.2), and to stablize my kH [8], and GH is [8]. Everything else was good, ammonia, nitrite, nitrate are all 0. Yesterday, my tank's temperature was 84F, so I decided to put some ice and water into it to sort of cool it down. The ice comes from the auto ice-maker in my fridge in which the water is filtered first before the ice-making process. This morning, I found several more shrimps have a nice white band color within their body which I know it means stress (bad sign). I also read from this website (thanks to Mustafa) about some of the reasons why shrimps would die, and so I quickly removed the green hedge plant from my tank yesterday; fearing it could be the toxins from the pesticides or etc. I have done a water change 30% 3 days ago, and used Seachem Prime to remove chloramine. The only thing I could think of is maybe I fed my shrimps everyday with fish flakes (but I do not feed them that much), which may have caused overfeeding. Yesterday, I observed one of dead shrimp shells are cracked (between neck and body) and towards the tail part of the body. My tap water has a kH of 3 and a GH of 3 also. But for the shrimps that are in my 2.5 gallon tank which also has a couple of green hedge plant from Pets'mart all survived and no death. And I only feed them every other day. So in conclusions:
I do not really believe it is the green hedge plant that was the cause of death (since I rinse them well really good), and I really never had a problem with plants that I have bought from before.
My kH and GH should be fine since I took up the advice from Mustafa already, and there has never been a fluctuation in pH at all.
Ammonia, nitrate, and nitrite should not be the problem since it is at 0.
No more fertlizer addition already for close to a month already.
25-30% water change is carried out once every 2 weeks, always used Seachem Prime following the dosage in the bottle.
The one and only one reason might be from feeding. I will try to make myself to only feed once every 2 or 3 days from now on, and very sparingly. I still have a decent amount of healthy RCS in the 20G tank, and if they all die, I will just give my shrimp-keeping hobby and switch back to fish-keeping hobby. I will update my progress on how it goes down the road. If you have any advice you can give me, it would be really greatly appreciated, or if you think some of my conclusions that I have came up with is wrong, please let me know. From then, thank you very much and I wish I was a good shrimp-keeping hobbyist like most of you are already (with jealously)
