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Hello RIU. This is being my best grow until now, and today i got some run off on one of my trays. "PPM" were 8.000-10.000. I normally dont achieve i runoff, first time doing in this way. I use a drip system. Plants are healthy and developing well. Soil has 20% earth worm castings, and is...

Thanks for the answer Renfro. I was a little suspicious about potassium, mostly because of other elements in my grow, that i didn't write because i wanted to keep it short. Medium is 50% peat moss, 30% perlite, 20% EWC. Amended with blood meal, bone meal and dolomite lime. Mixed, watered, and...

Hello RIU. My plants are on day 15 since switching to 12/12. They are like 80cm/2,6ft tall. Grow tent is 3x3 with 400W HPS. Some bottom leaves started to fell off and noticed these dark colored margins.

Yesterday this caught my attention.

Always good to give this thread another read. I have a question regarding NPK ratios and labeling. GH FLora Bloom is 0-5-4 with P2O5 and K2O. 0-2,15-3,3 is the with elemental P and K. Do you think of this nutrient as: 0-5-4 = 0-1,25-1 ratio or 0-2-3 = 0-1-1,5 ratio ?

I had nutrient burn because of EC levels rising due to dry soil. But that's just my experience.

Hello Renfro and RIU. I understand the math given in the first post and that's what i usually do. But lately i've been playing with Hidrobuddy and found some things beyond my understanding: I load Magnesium Sulfate, which is already on the database. Enter 50 desired Mg ppm for 1 liter of...

Well, i try to always improve my knowledge of how to grow, mostly by reading. Here's a general pic of the plant, you think it really looks that bad? Def won't do it again

Hello Renfro. I don't have a soil pH tester. I know it's not wise to mix my own soil and not being able to check it's pH. pH of peat moss is 4 and EWC and perlite i believe are around 6-7. I was also confused if it was P or K; i leaned toward K because of the necrotic spots. I believe that P...

Thanks for the info Renfro. I just wanted to "comunicate" the info on the book (the 6,2-6,8 pH is on the Hydro chapter) because im also a beginner.

Mel Frank's book recommends a pH of 6,2-6,8 for nutrient solution.

White stuff is diatomeacus earth, forgot to say. I stopped paying attention to pH a few crops ago. Tap water is about 6,9-7,2. I use water that i let sit for 24-72hs most of the times, but more than a few times i use it straight as it comes.

Hello RIU. I've been dealing with these symptoms. A little bit of context and info first: Strains: A) 2 sativa dominant hybrids (Moby-D and Super Lemon Haze) from BSF Seeds, a spanish "breeder". 4-5 gal pots. Moby-D is soon to be harvested; SLH still has a weeks to go. B) 2 unknown strains...

I've been dealing without too much succes with some plagues. Tried a neem oil based product, i suspect it's pretty diluted. I am also giving potassium silica product; instructions says to give 2 applications during veg and one in flowering.

Im taking about the first node you can see on the plant. The right branch is way higher and very more developed than the one on the left. Only due to sun/light exposure? Genetics? Thanks.

Hello RIU. I have this plant and don't know if it is too much foliage between the forming buds. My first guess is that everything is ok, but wanted to show some pictures and get some opinions. Thanks.

Actual pics of the plant.

On the first photo it looks like a third top, but it was the main stem that never continued its development. It grew the fan leaves but they remained together on their base, thats what im holding on the first pic.

This is the plant right now

Peak temps where about 95F/36C only on certain days and because of proximity of the HPS. My temp sensor is cheap and i dont trust it too much. Sometimes i used the sensor of my digital multimeter and readings werent the same. Leaves didnt get worse over time so i lean towards too much...