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Hi guys, Every grow i see the same problem Marginal Necrosis I dont know if it's nutrient burn, calcium def or Potassium def. I had the same problem last grow (before that never). I am feeding 3EC Athena Pro, 6PH Feed two times a day, once after lights turn on and once mid day. Pushing 30%...

Hi people, So i am currently having problems with my rockwool grow. 4" cubes on slabs. Feeding Athena Pro Line 2.7EC under LEDs (Lm301h). Not adding any CalMag as Athena rep told me its not necessary. Seing bad interveinal necrosis. My substrate sensors are showing media EC 4-6. Even if i water...

Hey guys, been a while since i lasts posted. I am currently struggling with my plants in 4inch rockwool running Athena Pro Line at 3.0EC and 5.7-5.8PH. I am using the classic "crop steering" irrigation strategy with about 8 waterings a day. My drain EC is 4. They look phosphorous deficient for...

Hi THC farmers, I have a question regarding the transplanting to rockwool slabs: So i always grew in either coco or the standard hugo 6inch blocks because my grow space did not have a high ceiling at all. Well now it does and i want to switch to the slabs to grow bigger trees. My question now...

So i need 150 LED fixtures for my commercial grow. What are the most efficient lights on the market rn? Is it still the ones with the samsung chips? I've been reading about the 5050 horticulture chips which can reach up to 3 µmol/J?? Is that true? If yes where can i get fixtures with these...

So I really tried to figure this out but i just dont get it. I have three plants in my self built growbox and i cant get them to grow properly. Ive been growing for years now and I never had this happen before. I run a 240W Quantum Board with a couple of deep red LEDs in there. 50/50 Canna...

Hey people, So i have all this GHE nutrients left over rn from growing in coco for a while. The ironhead formula always worked amazing for me but i want to go back to rockwool for a while. Does the ironhead formula work on rockwool too? I didnt really find anything about it. What are yall giving...

I have a 23 x 39 inch space and I am planning on buying a 240W quantum board. Does this have a proper illumination for this space? Because they are way cheaper then the samsung strips. thanks in advance

Hey people, long time grower here, planning to start a commercial grow op. First of all, i am not an english native so please excuse any grammatical/spelling mistakes. As y'all probably already know, germany is about to legalize and i want to get in. i have an investor/partner and we are...

Hey guys this is my first post on this forum. I have a few Cookies & Cream plants by exotic genetics that I cloned from my mother plant. Once they were rooted, I put them in 70/30 coco/perlite mix. They seemed to do well until they got bigger. I recently checked the roots out and on some...