#1: Does tigers breed at cherry's water parameters?

Crystal and Taiwan bee do not survive in cherry's water, however tigers shrimp seem to survive well.
Observation shows tiger shrimps can also get berried (have eggs) at pH of 7.6, however shrimplets are nowhere to be seen.

A 2kg bag of Shrimp Sand is purchased from Q1mall, to reduce pH to desired level. Waiting for delivery (ETA: 14th May 2020).