weird yellowing leaves

[jdr00]

Hi, this is probably my 4th grow and I'm getting a little frustrated with this grow. This is a sour diesel Auto flower from ILGM.com. Its 44 days old. But i think its blooming later then other strains I've grown. I'm growing with fox farm ocean forest potting soil mixed with about 1/4 perlite in an air pot (2 1/2 gallon). I'm using fox farm trio liquid fertilizer. My problem is the bottom leaves turned yellow and now bleached yellow. Also, the yellowing has spread going upwards. Some of the fan leaves are green on the edges and yellow in the middle (Mid plant). In the beginning of its life, I was probably over watering it. But I did cut back. If anyone might know what is going on with my plant, any help would be appreciated. If I'm leaving anything out, please let me know.

 

[420 Garden]

Where is your grow? What is your rh? Lights?

 

[jdr00]

The Rh is low. (30-40) But it has always been low or lower (15-20) and I've never had problems with that. Anyway, the light is a mars hydro ts 600 and the grow is inside a 2x2x4' grow tent that is inside my closet.

 

[420 Garden]

Are you only using FF nutes at 1/2 what ff says. Autos are very finicky when it comes to nutes.And I no longer use ff but did and found only 1/2 strength the plants responded much better.

 

[jdr00]

Yes, I started off with 1/4 nutes and gradually went up to 1/2 nutes. What fertilizer do you use now? any difference?

 

[420 Garden]

Your air pots look very clean. Do you water and get any run off? When I was using ff nutes on photos I did have to flush due to salt build up with ff liquid nutes.

 

[jdr00]

Yes, I get 15-20% runoff. but only recently because I didn't want to over water them while they were in veg

 

[420 Garden]

Strictly sea weed extract, cal mag 1 time a week, earth worm casting added to soil and casting tea every other week. 700 wall watts led, 8 inch inline fan, 4 tent fans, in a 5 x 5 grow tent. Last run 1 lb 3 oz.

 

[jdr00]

It seems like it's a lot easier it over water in the veg stage. Once they are in late veg to early flowering, I do flush to get the excess nutrients out.

 

[420 Garden]

Pk 13 14 at week 4 flower and add molasses at start of flower. Never has it let me down.

 

[420 Garden]

Ya got fans on the pots? It helps to dry the soil out quicker. And if you can get the pots up so air gets under as well. Also only water/feed when lights come on.

 

[420 Garden]

Read on iron lock out. Not sure if you have any but look into it.

 

[jdr00]

Ya got fans on the pots? It helps to dry the soil out quicker. And if you can get the pots up so air gets under as well. Also only water/feed when lights come on.

Yes, I have one fan on pot level and one blowing above, but not on the plant

 

[420 Garden]

1 1/2 wk old. But this is my set up.

 

[jdr00]

also, the ph of my nutes or water are between 6.5-7 according to my general hydroponics test kit.

 

[jdr00]

1 1/2 wk old. But this is my set up.

Do you get dense bud with your set up?

 

[420 Garden]

Water source? And try to keep ph at 6

 

[jdr00]

tap water(Hard). but run it through a under sink filter that i think removes chlorine. Does not remove minerals though.

 

[420 Garden]

Yep sure do but I lean on indica plants. Rock hard. 700 wall watts in a 5 x 5 is just under 30 watts per foot. I dim to 30% at seedling, 50% veg and 85% flower.

 

[420 Garden]

If your not sure on the chlorine let it set out 24 hrs. It will evaporate