Please help me pinpoint this issue.

Spots appear purple at first then turn yellow brown. Mostly on top and middle leaves. Affected upper leaves appear slightly yellow with almost a metallic purple sheen depending on the light.

Strain: Fast buds cherry cola auto, this is the indoor plant. I have two outdoors with the same treatment and no issues. Except they get fish mix instead of biogrow.

Soil: Fox farms ocean Forrest soil, 5g pot amended with a 7 tablespoons of limestone and 20% perlite. 4tbs of lime at planting time and then 2-3 top dressed during week 4 before the flush. Outodor plant got this too and no problems. Using calcitic lime.

Flushed with 15G of water last week. Last gallon of water contained bio buzz nutes.


butrients: Biobizz nutrients (BG,BB,TM,BH) with photo plus inoculants
Some powersi silica on occasion

Feed every watering at half strength using all mix bio buzz schedule . As recommended by biobizz and forums when using their nutes. Feed silica every other feed and photo plus once a week tho.

Roots look good, coming out of the bottom of the pot. White and fuzzy.

Sf1000 at 80% 18 inches away. 18/6

60%rh 75-78F

18/6

Ph water 6.2-6.5

Spider web visible in first picture is from an actual spider not spider mites

Thought maybe because they are stretching so much and have completely rooted the pot they are just hungry but I’m not so sure now.

Hey bro are you testing ec at all?? I would try keep your ph range between 5.8-6.2 is the sweet spot to aim for

Daino said:

Hey bro are you testing ec at all?? I would try keep your ph range between 5.8-6.2 is the sweet spot to aim for

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No I haven’t tested Ec at all this grow, have only seen some nitrogen clawing in one of my outdoor plants. Thought maybe I had some burn on this one but I backed off on the lights and it cleared up

OK and what about ph??

Daino said:

OK and what about ph??

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After adding nutrients my water sits around 5.9 on the ph scale. I add usually around .5ml-1ml of ph up per gallon to get the ph into the 6.2-6.5 range

They look hungry. Why did you flush them?

DeadHeadX said:

They look hungry. Why did you flush them?

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I knew the soil had been used up at that point and I had already top dressed with a little extra lime so I wanted to rule out nutrient lock up before continuing to upping their nutrients every feeding

Beazlebubs said:

Spots appear purple at first then turn yellow brown. Mostly on top and middle leaves. Affected upper leaves appear slightly yellow with almost a metallic purple sheen depending on the light.

Strain: Fast buds cherry cola auto, this is the indoor plant. I have two outdoors with the same treatment and no issues. Except they get fish mix instead of biogrow.

Soil: Fox farms ocean Forrest soil, 5g pot amended with a 7 tablespoons of limestone and 20% perlite. 4tbs of lime at planting time and then 2-3 top dressed during week 4 before the flush. Outodor plant got this too and no problems. Using calcitic lime.

Flushed with 15G of water last week. Last gallon of water contained bio buzz nutes.


butrients: Biobizz nutrients (BG,BB,TM,BH) with photo plus inoculants
Some powersi silica on occasion

Feed every watering at half strength using all mix bio buzz schedule . As recommended by biobizz and forums when using their nutes. Feed silica every other feed and photo plus once a week tho.

Roots look good, coming out of the bottom of the pot. White and fuzzy.

Sf1000 at 80% 18 inches away. 18/6

60%rh 75-78F

18/6

Ph water 6.2-6.5

Spider web visible in first picture is from an actual spider not spider mites

Thought maybe because they are stretching so much and have completely rooted the pot they are just hungry but I’m not so sure now.

Click to expand...

What's your Mg (magnesium) source? Interveinal chlorosis and eventual necrosis makes me think Mg. But I'm not a soil grower.

curious2garden said:

What's your Mg (magnesium) source? Interveinal chlorosis and eventual necrosis makes me think Mg. But I'm not a soil grower.

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1tbs per gallon of soil of soil doctor pelletized calcitic lime prior to germination. I mix it all in and water heavily with photo plus prior to dropping seeds in. Then at week 4I top dressed with another 2.5-3 tbs of the same like prior to flushing

Beazlebubs said:

1tbs per gallon of soil of soil doctor pelletized calcitic lime prior to germination. I mix it all in and water heavily with photo plus prior to dropping seeds in. Then at week 4I top dressed with another 2.5-3 tbs of the same like prior to flushing

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That's Calcium Carbonate you need a Magnesium source. In hydro we'd do an Epsom salt drench or foliar.

curious2garden said:

That's Calcium Carbonate you need a Magnesium source. In hydro we'd do an Epsom salt drench or foliar.

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Okay double checking my bag of lime it contains Mg at 1.1%, Mg oxide at 1.9% and Mg carbonate at 4%. Nothing compared to the calcium supplied by it. Think I should’ve paid better attention before I picked this bag up. I have some dolomite around and a bottle of AN revive. For now I think I’ll foliar feed it some Revive and then include some calmag into my feeding schedule. Next grow I’ll stick to dolomite