Need help

[AllGasNoSalt]

Flipped lights 3 weeks ago on Sluricane #7 and almost immediately started seeing these rust spots on fan leaves and now they are spreading to sugar leaves and I even see some discoloration on the stems. I'm using Roots Organics Uprising dry amendments 70/30 Bloom/Grow (5ml per gallon of soil), Kelp and buffering soil with Garden Sulfer/Dolomite Lime. Tap water is PH'ed to 6.0 and aerated. Humidity has been relatively high lately and touching 70% during the day and temps are 76 during day, 70 at night. Plant has been still putting on weight but 3 days ago I noticed the lower pistils were looking singed like it was later in flower. Let me know if you need any more info.

 

[Sativa1970]

Nothing in your description looks off. Look vary close under the spotted leaves for pests. Mites are the size of a flake of pepper. Could be mold issue. Spray effected leaves with 1 part isopropyl to 3 parts PHed water and increase air flow to dry the plant. Takes care of pests and mold.

Low cal mag could cause P deficiency but looks like you had that covered.

 

[Bill284]

Welcome to 420Magazine @AllGasNoSalt
Garden doesn’t look bad.
Nice work.
Have you tried calmag in your feed water?



Stay safe
Bill284

 

[Azimuth]

Flipped lights 3 weeks ago on Sluricane #7 and almost immediately started seeing these rust spots on fan leaves and now they are spreading to sugar leaves

Rust spots are typically of a calcium deficiency so Bill's question about adding cal/mag is a great place to start.

Flipping to flower causes hormonal changes in the plant and a rush of additional, and different, nutrients than those its been using in veg, particularly K, bit also a little bit of P. That's why things that went swimmingly in veg can quickly go sideways after you flip.

An rH of 70 this late in flower can be present a mold issue so see if you can get it down. And if that's your daytime reading as you say, you night levels are likely even higher.

 

[SmokingWings]

For several years I grew various strains in soil and was faced with the same situation you are now in. Then I switched over to Roots Organics fertilizers a couple of years ago and have had success since.

Flipped lights 3 weeks ago on Sluricane #7 and almost immediately started seeing these rust spots on fan leaves and now they are spreading to sugar leaves and I even see some discoloration on the stems.

A lot of damage for just 3 weeks. Most likely the problems started before that but once the plant began its flowering stage they accelerated and became very noticeable.

What I am seeing looks like an advanced Nitrogen and Potassium shortage along with a Calcium shortage.

I'm using Roots Organics Uprising dry amendments 70/30 Bloom/Grow (5ml per gallon of soil), Kelp....

Does this mean 70% Bloom Uprising and 30% Grow Uprising? The 5 ml per gallon mentioned by Aurora Innovations is the light dose for the Uprising fertilizers. Are you top dressing with the dry fertilizers or are you mixing with water?

How many gallons of soil in each pot? And what soil is it?

....and buffering soil with Garden Sulfer/Dolomite Lime.

Tell us more about the buffering with the Garden Sulfer/Dolomite Lime. That is usually for soils that need help with maintaining a proper pH.

Several photos will help at this point. Doing a quick check on-line I cannot find a photo of the back of the bags of Roots Organics fertilizers so can you take one of each of the Uprisings so we can see the NPK info and percentages? I know they are out there but it has always been rough trying to find them.

In the 2nd photo in the first msg there appear to be two buds in the background that have turned brown. Can you get a photo of that plant or plants if more than one?

 

[Sativa1970]

Have you tried calmag in your feed water?

Accidentally hit reply and can't get rid of it Bill.

Organic living soil with dolomite should cover cal mag needs. Dolomite is a potent source. Too much can block P.

Check that he dry organics are providing at least 5%K in that mix as mentioned by azimuth.

70 RH isn't that bad until you add the higher temp to it. Becomes a breading ground for pests and mold. also raises vapor pressure so photosynthesis slows way down.