Let’s notnfoght. There are lives on the line hahaha. Anyways. I have cheap dollar store seedling mix. Transplant to that or keep them in and flush them with 4 cups of ph 6-6.5 water?
When I flush I would add a cup. Wait 30sec add another until I start seeing run out then stop? Don’t add any more when I start seeing run off or keep adding?
Sounds like a plan.
If they're only seedlings, and you wanted to up pot them, then maybe a potting mix with lots of perlite.
No need to flush. Not needed. Plain water will be fine for soil. The soil will balance itself out.
I have never ph'd my water for soil.
Only concern is hard, or dirty water.
P.S.
I definitely agree with MMG. No flushing. This ain't hydro.