New Grower new to auto flowers

[petewad420]

I have a couple questions if anyone could help me out. what is the highest ppm you can push on your plants? mine are about 30 days old now and at the last watering my ppm was 900 or slightly over and 5.8 ph. 6 of my att plants are just looking super but a couple of them are starting to really yellow right around the areas where the buds are popping out. Anyone have any idea what that could be?

 

[az2000]

Can you post a photo? Are you growing in hydro, soiless, soil? Based on your ph, it sounds like hydro or soiless?).

I do a blend of 80% soiless and 20% soil. I run 6.0 veg, 6.2 flower. I'm regularly at 1140ppm in veg. (About 350ppm for seedling, 600 for 2nd week, 1140 after that.).

Do you supplement with a calmag product, epsom salts, etc? When I've had slight nute burn it appeared on the tips of all the leaves, not just new growth.

A photo would help.

 

[petewad420]

sorry my camera is broken so no photo. I use soiless sunshine mix number 4. I normally grow photo period camnabis and have never seen this with them. I use general hydroponics cal-mag plus. All my plants leaves are Green to the tip so I know I'm not getting nut burn , no leaf curl or anything. Everything else looks great except what i mentioned above. I think I might just flush those plants and see if I see any improvement

 

[az2000]

I think I might just flush those plants and see if I see any improvement

Well, you said you usually grow photoperiod. I shouldn't try to tell you what to do because I'm relatively inexperienced (on 2nd auto and photo grows).

But, if you're experienced and don't feel you've done anything wrong, I don't think I'd flush just to see if it does anything. I'd ride it out and see if it's just something peculiar to autos (or those strains). If they deteriorate after a flush, you'll never know if you "killed them with kindness" or if it was the original (perceived) problem.

I mean, usually new yellow growth is a type of chlorosis (deficiency of nitrogen, iron, etc.). If you flush, that would only make it worse (unless you're flushing out some other additives that are blocking nute uptake, etc.)?

 

[petewad420]

Very true i guess ill wait a couple more days see if the problem becomes more prominent and maybe ill be able to pin point it then. Thanks for all your help dude. Checked your pics out and shit looked dank

 

[az2000]

Since it doesn't sound like nute burning, I would be inclined to increase nitrogen to those showing yellowing growth.

Which nutrients are you using?

 

[petewad420]

Using fox farm hydro big grow, big bloom, open sesame, general hydro cal mag +, also a silica additive and great white for the roots