u/Relevant-Boat9342

I’ve had 4 shrimp die in 3 days after having them for a month.
My parameters:
Ph - 6.8
Ammonia and Nitrite - 0ppm
Nitrate - 10ppm
GH - 6
KH - 3
Is it the high TDS 700ppm or am I overfeeding them. I’ve been feeding them every day. I hear that can fatal to neos. They have been fine up until now so I’m not sure what is going on.
It’s a heavily planted community tank.