Good news first
The three youngest seedlings are all looking well.
CAR2 - Day 3 - 10/08/09
UNK2 - Day 5 - 10/08/09
UNK1 - Day 6 - 10/08/09
This may be the last time I will be able to remove UNK1 from it's hole, roots were already difficult to get back in. They may fit better once they elongate and hang straight down. The root growth was different on this plant due to placement in the bubbler immediately after germination. By comparison CAR1 was six days old and had already poked a root out of the bottom before it went into the bubbler. All of the current CAR1 root development is from the bottom of the netpot.
Now for the bad news
I have some burning on the oldest and largest leaves of CAR1. This started with the lowest set of leaves and at the tips of the biggest set several days ago. You can see in this and earlier pics how the tips of the biggest leaves were turned down. There were too many variables introduced at the same time to be 100% sure of what is happening but I believe that it is a combination of:
Lights lowered to approx. 6" for a day from 10/06/09 - 10/07/09
- Lights raised back to 12" yesterday morning after spread of burned area was noticed.
Foliar feeding. 3x on this plant 10/01/09 , 10/03/09, 10/06/09. Think that's too much...? It felt so good while I was doing it... Duhhh...
- Cut that sh*t out for now. Patience.....
Perlite had Miracle Gro in it. DOH! I found this out a couple of days after putting it on top of the netpots. I had rinsed it well but I was not 100% sure that it was all gone. I was not very concerned at first because I was not watering from the top so I thought that any small amounts of MG that remained in the perlite would be negligible.
- Removed perlite, flushed STG cubes with H20, installed Hydroton pebbles on 10/05/09.
I also verified and adjusted:
PH
- Was slightly low last night, adjusted back into range.
Nutrient solution
- PPM was 240 or .28 of full strength. No adjustments made.
CAR1 - Day 16 - 10/08/09
Hopefully the burn will not spread any further; if it does I'm afraid I could lose the plant. The good news is that the burn is on the older growth which to me indicates past rather than current trauma. As always I would appreciate your thoughts and comments.