Confused on whats the problem here...

So as you can see these plants are yellowing.
Plant A got transplanted 10 days ago into FFOF soild. Been using just water for now. Plant is most likely 3 weeks old. Its outdoors (no greenhouse) for about 8hrs of direct sunlight. Kinda looks like nitrogen or ph prob to me. But Ive known 3 others who let tap water sit out 24hrs and havnt had a problem with the ph at all in FFOF soil, so I dont think its the pH but Im still new at this. All the new growth is green. Just these 2 mid/bottom leaves are yellowing. Some leaves show some brown'n to the very edge on the end/middle of them.

Plant B

Transplanted 18 days ago into same soild with just water to feed. Same light conditions and everything. The very bottom of leaves were just a set of 3 that were all yellow prob 5 days ago, but its started new growth there and started to green. So kinda baffled at what the actual problem is. Thanks for the help guys!!

i wouldnt worry too much about it man...it happens that the first couple leaves sometimes die off as new growth picks up....
I dont think it would hurt your plant to get a little feeding.. so maybe you should start on your veg fert...
From what i can see, your soil is mighty dry too... dont get me wrong its good to have your soil dry up before watering... but if its that dry on the surface most of the time, it means you need to water a little more...
It looks like you use similar pots to me, and i use about 500 ml of water when the plant is small in these types of pots and 1 liter when they begin getting bigger all the way thru to week 5-6 of flowering then cut back to 500-750 ml's of water during your flush or even approaching your flush...
take it easy,
and good growin my friend

Thx for the info. Yeah I am doing water every 5 days right now cause I was doing that wonderful overwatering at first. Guess Ill try every 4 days now and see how it goes. Along with getting some nutes for these things.

Cool Keep us posted....
I like to dose my watering so that i have to water every 2 days.... Its a good ratio for watering/fertilizing and allowin the soil to dry just enough so that it wont rot....
Keep it green my friend
Peace

Dang dude plant B is ugly. LOL