I have a few mystery snails and shrimp. I purchased my first golden mystery snail at local pet store on May 08, 2021. I put it in a 36 gal planted tank. The snail was very active for a few weeks and then began to just not move at the bottom of the tank and come out a little bit, but never moved again. A few weeks later, I purchased 2 more snails at a different local pet store: a blue mystery snail and an ivory snail, and the same thing has happened were both snails were very active and then now they are not moving at all. I put a wonder shell in the tank last night, just in case I don't have enough calcium in the tank. I do have some brown/green algae growing in my tank as well. I can't seem to keep Ghost Shrimp alive in my tank either. What am I doing wrong?
My tank tests were taken last night.
Results:
GH:13
KH:6
Copper:0
PH:8
Ammonia:0
Nitrite:0
Nitrate:0
TDS:1357
Temp:77
Thanks in advance.