I'm having trouble keeping cherry shrimp and have tried a million different things to figure out what exactly is going on in my tank. I have some specific questions but I'm very new to the aquarium hobby so any advice would be awesome 
Here's my set-up: I have a 10 Gallon aquarium with live plants(java fern, java moss, amazon sword and some hornwort), fluval shrimp stratum, five amano shrimp, two nerite snails, and a school of ember tetras. I have a testing kit and test the water once or twice a week and I do 10% water changes once a week. My pH is around a 6.8-7.0, the stratum keeps it low. My heater, which is a 50watt Tetra submersible heater, keeps the tank around a 78º-80º. I feed the shrimp algae wafers occasionally and feed the ember tetras a different food. I dose the aquarium once a week with the appropriate amount of the following:
API CO2 Booster
API Leaf Zone Fertilizer
Seachem Flourish
Aquavitro mineralize
Some Specific Questions:
I use an API pH down to lower my tap water pH, would it be better if I used bottled/jugged water from the store? If I did that, what products would I need in addition to the ones I already have to make it fish/plant friendly?
My ammonia/nitrate/nitrite levels are usually safe and if they approach dangerous levels I do an extra water change. My gH is a 6-9. My kH is 0, could I mix Seachem alkaline buffer to increase this? And would it increase my pH too much? Could I just use the API pH down to offset it or would that just negate the effects? Would there be a better product?
The cherry shrimp kept dying and I only have one left(what a trooper xD), I've attempted this several time and repurchased shrimp from different stores thinking that maybe petco shrimp are just bad and the LFS ones would fare better but they died one by one over the course of a month. They seem to die most frequently after water changes. So before I attempt it again I figured I would get some help.
I am also totally willing to change to any kind of hardier shrimp that will breed in freshwater and is appropriate for my tank setup.
Thank you!
~Kayla

Here's my set-up: I have a 10 Gallon aquarium with live plants(java fern, java moss, amazon sword and some hornwort), fluval shrimp stratum, five amano shrimp, two nerite snails, and a school of ember tetras. I have a testing kit and test the water once or twice a week and I do 10% water changes once a week. My pH is around a 6.8-7.0, the stratum keeps it low. My heater, which is a 50watt Tetra submersible heater, keeps the tank around a 78º-80º. I feed the shrimp algae wafers occasionally and feed the ember tetras a different food. I dose the aquarium once a week with the appropriate amount of the following:
API CO2 Booster
API Leaf Zone Fertilizer
Seachem Flourish
Aquavitro mineralize
Some Specific Questions:
I use an API pH down to lower my tap water pH, would it be better if I used bottled/jugged water from the store? If I did that, what products would I need in addition to the ones I already have to make it fish/plant friendly?
My ammonia/nitrate/nitrite levels are usually safe and if they approach dangerous levels I do an extra water change. My gH is a 6-9. My kH is 0, could I mix Seachem alkaline buffer to increase this? And would it increase my pH too much? Could I just use the API pH down to offset it or would that just negate the effects? Would there be a better product?
The cherry shrimp kept dying and I only have one left(what a trooper xD), I've attempted this several time and repurchased shrimp from different stores thinking that maybe petco shrimp are just bad and the LFS ones would fare better but they died one by one over the course of a month. They seem to die most frequently after water changes. So before I attempt it again I figured I would get some help.
I am also totally willing to change to any kind of hardier shrimp that will breed in freshwater and is appropriate for my tank setup.
Thank you!
~Kayla