RDWC HELP

So I started four NYC diesels all sprouted and once I had roots coming out of the bottom of the rock wool I moved to the rdwc . My question is why are 2 of them doing great and one is lagging way behind and no roots out of net pit but other 2 have roots to the bottom of 13 gallon container also leaves have been curled like in pic from almost beginning I think it’s lower in the net pot than the others and it’s staying way to wet but looking for anyone’s input (one ended up dying long story and started another so that’s why there’s 4 total) thanks in advance

Starting small seedlings into an RDWC system can be a crap shoot.

Starting out with identical well formed clones would solve the problem for good.

Ive never had an issue myself with sprouted seeds, placed in rockwool then tossed immediately into my buckets. Probably just the plant, an odd ball. Ive had some late starters before, always lagged slightly behind, but finished.

You'll probably be fine.

I also read that nyc diesel isn’t the easiest to grow but the roots are doing great on 2 and the back one that started at the same time I moved it up in the net pot it wasn’t soaked but also didn’t seem to have very much root under it I tried to move it as little as possible and hope it will come to life I think the Hanna groline meter is not helping for some reason it does great and then boom shows that ph has dropped to 4.3 and just gets stuck so I’m having all kinds of fun my first shot at hydro