2nd grow- downward leaves with discoloration 5 weeks after flipping to flower

[juddtastic]

2nd grow..5 weeks since flip- about 10 days ago some leaves started to get yellow, then some have turned into major discoloration. All are pointing downward- some with burnt tips. Some are at the bottom some are random.
Roots organic Lush soil
Roots organic nutes
Vivosun vsfd 6500 lights
Had the lights at 100% the last 2 weeks, backed them off to 75% last night and raised them. Ph is at 7.0. My ppm was a bit high last feeding at 1000, my tap water is at 150 ppm. Temp in the tent hasn’t gone below 65* or above 82..
Any advice would be greatly appreciated!

 

[Grownsince95]

The leaves are telling me it's a Phosphorus issue. Could be either a deficiency or lockout due to root conditions. At 1000 ppm I would be looking at watering practices and root zone pH/EC

 

[juddtastic]

The leaves are telling me it's a Phosphorus issue. Could be either a deficiency or lockout due to root conditions. At 1000 ppm I would be looking at watering practices and root zone pH/EC

Thank you very much. I also forgot to mention that I just added the AC Infinty terraform, so the AC ducting comes in from the bottom left- directly at the bottom of the 2 pots on the left… so I pulled it out and aimed it upwards to avoid blowing directly on the roots of the pots. Thank you again for your insight!

 

[Ninjadogma]

At 7.0 you are likely not getting any iron uptake. Probably the only micronute that is a problem at that level. But excess nutes or chloramines in the water can mess things up too.

 

[juddtastic]

At 7.0 you are likely not getting any iron uptake. Probably the only micronute that is a problem at that level. But excess nutes or chloramines in the water can mess things up too.

Thank you, I’m going to just get some bottles of distilled water and no nutes next couple waterings.

 

[Grownsince95]

Thank you very much. I also forgot to mention that I just added the AC Infinty terraform, so the AC ducting comes in from the bottom left- directly at the bottom of the 2 pots on the left… so I pulled it out and aimed it upwards to avoid blowing directly on the roots of the pots. Thank you again for your insight!

Keep us updated I'm looking into the terra form!

 

[juddtastic]

Keep us updated I'm looking into the terra form!

It’s amazing! The only “ complaint “ is that you can’t use all of the capabilities without moving the intakes/ducting around…regardless, having an AC that EASILY cools my 8x4 , is a great asset. The room I have my tent in is large enough, that I don’t even need to vent it out of a window. I’ve only had it a few weeks, so I am curious to see what my next electric bill might be. Thank you again for your advice!

 

[OldSalty]

I had a plant that appeared similar to yours and at the same point in its life cycle. The inherent soil ec combined with the ec from added inorganic nutrients resulted in a high total ec. Hard to take up nutrients when you’re salt curing your roots. I’m not saying that your situation is similar. You mentioned 1000 ppm at runoff. What does this translate into as an electrical conductivity on your probe? Or do I have your units mixed up. Hang in there. Someone here will put you on the right path.

By the way, a flush with tap water cured my problem. But the recovery time was a couple of weeks.

 

[Oldchucky]

It’s amazing! The only “ complaint “ is that you can’t use all of the capabilities without moving the intakes/ducting around…regardless, having an AC that EASILY cools my 8x4 , is a great asset. The room I have my tent in is large enough, that I don’t even need to vent it out of a window. I’ve only had it a few weeks, so I am curious to see what my next electric bill might be. Thank you again for your advice!

Wow! Never heard of running an air conditioner without venting it outdoors! I ran into a guy once it had a window air conditioner, sitting on his kitchen table, running and wondering why it was so damn hot in there!

 

[juddtastic]

I had a plant that appeared similar to yours and at the same point in its life cycle. The inherent soil ec combined with the ec from added inorganic nutrients resulted in a high total ec. Hard to take up nutrients when you’re salt curing your roots. I’m not saying that your situation is similar. You mentioned 1000 ppm at runoff. What does this translate into as an electrical conductivity on your probe? Or do I have your units mixed up. Hang in there. Someone here will put you on the right path.

By the way, a flush with tap water cured my problem. But the recovery time was a couple of weeks.

I think that’s what I’m going to do. Seems logical and best way to keep them going. I’ll just Ph the water and run it through. My tap water is over 8.0 Ph

 

[OldSalty]

I think that’s what I’m going to do. Seems logical and best way to keep them going. I’ll just Ph the water and run it through. My tap water is over 8.0 Ph

On the issue of pH, I do the same although some say it’s unnecessary. It’s true that soil has a high buffer capacity and can neutralize the materials that are in your source water. However, over time you can exceed the buffer capacity of the soil and it will begin to swing. I suspect this is why people run into pH swings with commercial soils later in the grow. Keep us posted!