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I am trying to get an idea what is wrong with many of my recent grows. No matter what I do, I run into problems. Thing is, I am torn whether it is Potassium, Mg or maybe even N deficiency (early stages). I am feeding Flora Trio and even already did treatments with CalMag. I am suspecting that...

I apologize to bring the topic here. By coincidence I planned an outdoor grow later this year, and for amending soil I also considered bat guano. Well, to make a long story short, all you need to do is google "bat guano coronavirus". This is not just speculation, it's fact. Studies have been...

Rather than getting seedling soil or pro mix or similar....it just dawned on me that you could just flush any normal soil and turn it into light soil..so it isn't "too hot" for seedlings. Am I correct?

I am growing for 5+ years, and I am usually using GHE products. Had excellent results with Floranova, and currently using the classic GHE trio Grow, Micro and Bloom. I was, for some reason assuming that you actually give nutrients to every watering. (Currently growing in soil) I am now coming...

I am in SE Spain, which has a hot/dry climate without frost. I have in the past already grown outdoors (on my roof). The timing for my current grow is off. It's a Sativa (Amnesia) which I currently have in my Greenhouse on the balcony, under LEDs (6x CREE CXB3590). I am currently debating what...

GHE themselves says that the shelf life of Flora (Flora Gro, Flora Bloom and Flora Micro) is indefinite if it's stored sealed in a "dry and cool place". I have the three bottles (manufacturing date Sept 2015), and I use them for 3+ years already and have stored in a dark cupboard. (In case you...

I have a HLG-240h-C1750A (71V - 143V, 875 - 1750mA via internal pot) but now I would like a HLG-240H-C2100A: (59V - 119V, 1050 - 2100mA). The wattage is obviously the same, only the ratio V:C is different. My reasoning is that the PCBs might be the same of all the HLG-240H, and that just a...

I have three bottles of the classic GHE Flora Trio, which are now about 3 years old. GHE on their site says that the shelf life of GHE Flora is infinite, as long as they're stored right. (Which I am sure I do. I store them at room temp, in a dark place) I notice a rattling when I shake the...

I am using Neem oil extract (Azadirachtin 3.2%) and insecticidial soap for the longest time already, but today I did found some info that might interest you if you're also using Neem and/or insecticidal soap for spraying: * When you use a Neem product as I do, a Neem oil concentrate with 3.2%...

I don't know where I picked this up, I think it was on a site for growing hot peppers. Could some mild stress on the plants, such as not watering for a bit give them better taste and potency? (Or in the case of peppers make them hotter, as was claimed). Has anyone experience with this? Ty!

I am growing in a DIY substrate which is (roughly) 3 parts perlite, 3 parts vermiculite and 3 parts coco coir. What puzzles me when looking at these usual nutrient pH range charts for weed is the "flip" of the availability especially for Ca(lcium), which in hydro is like 5.2-5.8, and in soil...

What should I do? Leave it like that with my small fan blowing over it to strenghten it (as I do right now), or bury it a little deeper to cover the green part on the bottom of the stem? I have no idea why it grew that strange with that hook at the bottom. Otherwise the plant seems "stable". I...

There is very little information on this, IF AT ALL, with the exception of some shroomers who use Coco/Vermi for cultivation. I have never ever anyone seen making a mix of coco coir WITH VERMICULITE. And Perlite added for drainage/airation. This is really extremely odd since on paper...

When you up-pot a plant, you obviously want the plant to fill out the bigger pots with roots. My question is whether giving the full strength of nutes after up-potting would slow down or hinder root growth - which would suggest that one shouldn't give full strength (or only little nutes) after...

When I read on hot pepper forums I constantly read about how some recommend using very cold LEDs, like 5000K if not 6000K. I am currently growing with CXB3590s, the "standard" 3500K, 36V, CD bin like most do. (And NO I have not the slightest complaint, my plants and "medical plants" grow like...

I can dim my driver from 875-1750mA. My current light bar with 4x CREE at max power (1750mA X 36V) = 252W total, I know this works. So I am taking the 252W as maximum the driver can handle, with 6 COBs that means I should be able to comfortably run 6 at 40-42W each, so I'd adjust the driver at...

I calculated roughly 1W per fan for my fans which are Arctic F12, based on [email protected] (see their specs). Then there is the Meanwell LED driver, say some typical driver like the 1400mA or the 1750mA drivers, and the 12V MW driver for the fans. Just wanting to know when I measure the TOTAL...

I know the PPFD formula which is Input power [W] x efficiency [dimensionless quantity] = radiant power [W] luminous flux [lm] / LER (luminous efficiency of radiation) [lm/W] = radiant power [W] radiant power [w] x QER (quantum efficiency of radiation) [µmol/J] = photon flux [µmol/s] photon flux...

I came across some curious posts from a few years ago where someone introduced a "12/1" light cycle for vegging. Basically, the cycle is 12 hours light ON, 5.5hrs OFF, 1hr ON, 5.5hrs OFF == 13 hours light, as opposed to 18 hrs of light as with 18/6 == 5 hours less light needed per 24hrs cycle...

I am vegging currently with 4x CREE CXB 3590, in Hempie buckets. I did some calculations (I will be flowering outdoors!) that I need to wait until June 1st to put them outside, otherwise they would re-veg. "Problem": The plants grow at an insane speed and I I have to look that I somehow can...