Sick Plants

[DeadKennedy]

Type-Amnesia Haze Auto Flower
Medium-Foxfarm Ocean Forest
Age-15 days old
Lights- Starting off with CFL's Will Go to HPS when Bigger
Watering- Should be right amount /letting them get dry then water
PH- Around 6.5-7 (PH'ing the water before watering)-(Bottled water no chlorine)
Nutes-None yet
3 Plants
Closet Grow
Have fan to pull heat away/Plenty of air exchange happening

Ok, It looks to me that I have two problems:

1) It looks like Nute Burn- Tips are getting brown plus the yellowing on one of the plants.

2) It possible I had the lights too close on the plant that has the most yellow because the Leaves we cupping up.This plant also has the worst yellowing.

3) No nutes were added. Straight Foxfarm Ocean Forest.

This is not my first grow.

This is my first Autoflower grow.

I did exactly the same steps as my other 4 grows and did not see anything like this with the plants at such a young age?????? The difference is these are auto flowers and I was doing Northern Lights Fem non auto's.

My 4 other grows were extremely successful.

What steps I have taken:

1) I was thinking possibly my CFLs were too close so I moved them up.

2) Because it looks like Nute burn(I hear Ocean Forest can be hot on seedlings) I did a Flush on all three plants yesterday morning.

3) You cannot see the cupping so much on the one plant because I flushed it yesterday (the yellowing one)

4) The lowest leaves on all of them look like nute burn??? Only one almost looks like a deficiency????

Any ideas??????

**** One difference between my last grows and this is that these cups are clear? The other grows the cups were were red could this be an issue?

 

[namvet25]

What kind and size are the pots?

 

[DeadKennedy]

Plastic cups with holes in the bottom. Will be moving them to 3 gallon pots soon.

 

[namvet25]

Plastic cups with holes in the bottom. Will be moving them to 3 gallon pots soon.

If those plastic cups are clear that's not good for growing so get them in there finale pots asap.

 

[DeadKennedy]

Yup, did that this morning. They are in 3 gallon pots now. The damage has not gotten worse since the flush. Thanks.

 

[Waira]

... browning or yellowing on tips and along edges is a symptom associated with several things, including deficiencies, and off pH... That's the more likely problem here, as OF is a pretty rich soil, but is also a well know problem soil here! I used to use them myself, until bags started coming in with pH in the low 5's ... their quality control is dubious at best these days despite continued popularity....... I'm afraid to ask if you used OF for final pots, assuming so though,... well, the best way to test soil is with a soil pH probe (meters are for liquids only), the Accurate 8 is a good unit for this,... Your input pH is OK, but that doesn't mean the in-pot pH will reflect that, too many other influencing factors in there!
....clear isn't a good choice, growing roots don't like light,.... In fact, there's no real point to starting them in such cups unless there's a really good reason, best to plant directly into final pots... transplanting itself is OK, when done right,... starting in decent size cups, avoid any sort of root cramping, and when doing transplants, any damage to the roots is a bad trip to stunt city!
..how close were the CFL's, and were they horticultural types? Light spectrum is everything here, and house lights do not cut it for good results,....