The GH at 6 is OK for Boraras. I will let the shrimp experts comment on shrimp in this soft water as I've no experience. As for the pH, I would agree with lowering that. Your KH is not high, so this should not be too difficult.
Originally Posted by Zerileous
Byron Hosking, BMus, MA
Vancouver, BC, Canada
Something we all need to remember: The fish you've acquired was quite happy not being owned by you, minding its own business. If you’re going to take it under your wing then you’re responsible for it. Every aspect of its life is under your control, from water quality and temperature to swimming space. [Nathan Hill in PFK]