Not Again!!

[scarfa21]

I dunno, Ive been using 0 nutes but bigbud and 6.3ph. Not getting worse, buds are sticky and filling out. So strange this whole grow ive only used nutes once. Temps are normal now, 75 and 40% humidity.

 

[Badfinger]

I wonder if we have the same issue. The thing we seem to have in common is tap water. I tried no nutes, more nutes, cal-mag, flushing, and it just keeps coming. Everything I ph to 6.5, runoff is 6.5. The latest thing I been looking into is flouride toxicity maybe. I switched to spring water a few days ago. Feel like I'm throwing darts blindfolded.
My thread https://www.autoflower.org/threads/looks-like-rust-updated-with-form-info.84055/

 

[armanidog]

I looked around. In your report you said you were using the Marsh Hydro AND a COB light for one plant. Do you think it could be too much light causing stress which enhanced other problems such as calcium deficiency? Look at post #17:

https://www.autoflower.org/threads/...-to-include-other-issues-as-well.43164/page-2

Here is another photo I found on another site on light and heat stress:

Hopefully you can figure it out for the next grow. I bet a healthy Gorilla Glue would deliver a very good harvest.

 

[DCLXVI]

So I re-read the first page, the only thing I can think of at this point is, as mentioned by @Badfinger , your tap water. Have you tested the ppm/ec on that? Most nutrient lines are designed to be used with 0ppm RO or distilled water and the AN bottles say to use at max 100ppm starting water.

I cut my tap water 50/50 with jugs of distilled water from the store. Mine is usually around 212ppm and cutting brings it darn close to 100ppm. Might be worth a try. If you're not doing so already, let your tap water stand out for 24hrs to offgas some of the chlorine compounds.

Good luck, hope it turns the corner for you.

 

[scarfa21]

So I re-read the first page, the only thing I can think of at this point is, as mentioned by @Badfinger , your tap water. Have you tested the ppm/ec on that? Most nutrient lines are designed to be used with 0ppm RO or distilled water and the AN bottles say to use at max 100ppm starting water.

I cut my tap water 50/50 with jugs of distilled water from the store. Mine is usually around 212ppm and cutting brings it darn close to 100ppm. Might be worth a try. If you're not doing so already, let your tap water stand out for 24hrs to offgas some of the chlorine compounds.

Good luck, hope it turns the corner for you.

Thanks, ill check it when i get home.

 

[scarfa21]

I looked around. In your report you said you were using the Marsh Hydro AND a COB light for one plant. Do you think it could be too much light causing stress which enhanced other problems such as calcium deficiency? Look at post #17:

https://www.autoflower.org/threads/...-to-include-other-issues-as-well.43164/page-2

Here is another photo I found on another site on light and heat stress:

Hopefully you can figure it out for the next grow. I bet a healthy Gorilla Glue would deliver a very good harvest.

Never thought of too much light? TSW2000 set at 60% only and only 1 cob. So strange.

 

[armanidog]

Never thought of too much light? TSW2000 set at 60% only and only 1 cob. So strange.

I'm just guessing. It's so puzzling to figure out some of these problems.
It's best to go with the simplest and most common problem first. Which would be pH.

 

[scarfa21]

I'm just guessing. It's so puzzling to figure out some of these problems.
It's best to go with the simplest and most common problem first. Which would be pH.

Ph is at 6.5, only using tap water and bigbud. phd with a calibrated pen.

The last few watering's I was ph 6.3, but both of those should be safe.