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I have 2 of my 9 1-month old CH9 Jack plants that don't seem to want to grown and green up like their sisters. There is browning at the edges of the older leaves and some burn spots on them as well. I was told that it could be N-burn, but after reading the trouble shooter I think it could...

This is my first attempt to grow. I lived in Zuid-Holland for some time and besides my formal studies, I spent much of the past year learning about cannabis horticulture. Besides being a casual vaporizer user, I have a relative suffering with MS. This bud is for her. 10 CH9 Jack Feminized...

I started 9 CH-9 Jack Fems from seeds in rockwool about 2 weeks ago. 2 days ago I noticed some yellowing on the tips of one of my seedlings. Another one is now showing some faded spots and now its tips are yellowing too. I'm concerned b/c I don't want to lose my first hydro-crop before it...

I'm putting my ch9 jack fem seedlings (2nd set of pointed leaves just emerging) into my rainforest aeroponic planters. I rinsed and soaked the hydroton REALLY well, but I still get a TDS of 400 when I pour distilled h20 through. Is this normal? Should I adjust the strength of my GH Flora...

It's my first day running my air "cooled" 600W MH-Conversion lamp in my 2x4x7 tent and I'm getting temps approaching 100F (37.8 C) inside my tent:holysheep:. I have 2 6" Inline Duct fans on the AIROFLOW reflector and 2 more for tent ventilation. Each fan claim 250 CFM Boosted, 160 CFM Free...

I'm trying to start some seeds in rockwool and I think I may have put the seeds upside down! I used the paper towel method to get a root tip (about 1/2) and then placed them root-tip-down into some rockwool cubes yesterday. I know the seeds are supposed to turn once or twice, but I can't seems...

I'm growing in 2 new GH Rainforests and wanted to know if I should sterilize the containers with bleach or some other disinfectant before I put my seedlings in next week?

I'm just getting ready to germinate my first set of seeds. I am going to use the much loved paper-towel method, and then after a root apears place the cracked seeds (with their small root) into some rockwool that I've been soaking and Ph adjusting. When I place the germinated seeds into the...

I currently live in Holland :cool:, but will soon be returning to the US. This will be my first time growing. I'm putting together a set-up in a closet and I had some questions on lighting choices. Has anybody had experience with LEDs?:confused: I hear claims (namely by LED sellers) that...