Help! Need a room to be saved!

I work at this rec farm and we have a room full of white Tahoe cookies and a couple gelato and it sees they are over watered.

My boss wants to flip it but I I'm terrified they will all just die.

160 are getting about 50 gal distributed every two days, not drinking really

Using : bio biz products
850 PPM
5.8 PH

I just replied to this somewhere else asking for pics without hps and asking why the low ph
The first pics were of a bunch of plants in soil

Ugh. Didn't mean this one to be posted