ppl keep yamato to control algae and cherry for their light color, both are hardy but both won't survive uncycled tank.
shrimps is fragile my friends , they are 5x more easy to died then a fish.

Eat both.

safe if you follow limit, bw growth is liquid carbon like co2.
You seem to killing lot of shrimps since you starter shrimp keeping.

Try at fish depot or 88 pets mart

rm10++-rm30++ depend on size. Try get online then.

Suspect your house tap water contain high level of copper.
copper is fatal to shrimp not to fish.
Only good anti chlorine can bind these heavy metal.

So you go full RO water now?

hi guys
why my Red Cherry shrimp die after moulting and during moulting?
i never check my water parameter (ph 6.0)
i use full ro water without any additive

another question
how to increase ph? (current ph 6.0)
using Aqua Soil-Amazonia Normal and Powder type
pressurized co2 (0.5bps 24/7)

GH should be 4-6 or they will have problem with moulting. You can use Mosura Mineral Plus to slightly raise your GH but it will also raise your TDS.

If you are not keeping Crystal shrimp type shrimp that require low acidic water parameter , then go for sand setup for ease and fast setup,
for 2ft tank , get one to two bag of shirui sand, and go buy and use Salty shrimp shrimp mineral GH/KH + salt to mix with RO water(you have to use FULL RO water so that the salt produce accurate parameters) , with this salt , you basically need nothing else added(save some $$)
RO water , just go 99 speedmart and buy the one carton 1.5Lx12 bottle at RM6.50 per cartons, 2ft tank only need around 3 cartons, don't be stingy on
this.
Link to purchase the salt here -> http://www.lelong.com.my/salty-shrimp-shri...5-07-Sale-P.htm

Setup using this salt suitable for all neocaridina type of shrimps like cherry , fire red , yellow , blue diamond etc.

Yes, all salty shrimp salt are mean to be self sufficient, add RO and ready, but basic tank cycling still needed.