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Will something that emits infrared light (not visible to the human eye) cause your plants to go hermie if it is used as a heat source during the dark cycle of flowering? I'm talking about these to be exact...

Anyone ever use this stuff before? How much of it does it take for a single flush?

With winter approaching I'm wondering if there's any type of lamp that I can put in my grow room which is in an attic to keep it warm. Like a lamp that creates heat only and no light or something. I have a tiny portable heater but that thing draws 12 amps by itself. I'd like to tackle it now...

My plants have 18 hours of light and 6 dark. The 6 hours of lights off in my box have high temps at 103*F, along with 3 hours before and after lights out for a total of 12 hours a day. The other 12 hours in the box it stays 78*F-82*F. Will high temps for half the day turn plants hermie? They...

Is there a product out there that I can add to my soil to keep my PH close to 6.5 regardless if I add water with high PH or low PH? For some reason I thought that's how lime worked, but I tested it and it only raises the PH. I'm looking for something that will adjust it to 6.5 regardless of...

My plants have 18 hours of light and 6 dark. The 6 hours of lights off in my box have high temps at 103*F, along with 3 hours before and after lights out for a total of 12 hours a day. The other 12 hours in the box it stays 78*F-82*F. Will high temps for half the day turn plants hermie? They...

If I grow from seed and have ducting leading outside for my passive intake, are the chances high that I'll get spider mites? I read on here that spider mites don't just appear, and that they are more often than not brought home on clones. It's only been a day and I already found a wasp in my...

Will a fluctuating light cycle during vegging cause your plants to go hermie? I've just got 6 seedlings right now and I usually run my lights 18 on 6 off. The 6 hours off is from noon until 6pm. Is it ok to put the seedlings in the window one or two times a week during the dark cycle? I have my...

Will a fluctuating light cycle during vegging cause your plants to go hermie? I've just got 6 seedlings right now and I usually run my lights 18 on 6 off. The 6 hours off is from noon until 6pm. Is it ok to put the seedlings in the window one or two times a week during the dark cycle? I have my...

Will a fluctuating light cycle during vegging cause your plants to go hermie? I've just got 6 seedlings right now and I usually run my lights 18 on 6 off. The 6 hours off is from noon until 6pm. Is it ok to put the seedlings in the window one or two times a week during the dark cycle? I have my...

I know 105*F is about 30*F too hot to grow in, but read on here that temps don't matter when using CO2. It seems like 105* would be too hot either way, isn't it? What is the max temp for growing when using CO2? Also, what is the lowest possible temp for growing with and without CO2?

I have large sheets of mirror from a project that a buddy was working on. If I could manage to cut them to size, would they reflect light better than mylar or flat white paint in my grow room?

So I have a grow room built. It's 2'x4'x6' with a cealing that can be lowered to 2.5' and 4.5'. The room is also split in half for flowerig and vegging. The flowering side is 99.999999% light leak free. I would say it's 100% but I didn't keep myself locked in there for the full 30 mins it takes...

While flowering how much light leaking into the grow room is acceptable? I know that no light is optimal, but is there a tolerance level? I know that most nights outside it is not completely dark, and outside grows do just fine.

I heard buds produce more THC with more ultraviolet light. What kind of UV light causes this? UVA, UVB, UVC, or all three? Would a general reptile light specificially made to supply UV supplement enough for more THC? What about a 14000k flourescent such as this...

Just a couple questions regarding an air cooled 400w hps in a 2'x2'x5' grow tent. I will be running a 165 cfm fan attached to one end of the light hood, and since I only have one fan I plan on leaving the other end of the hood open so that the fan can also suck out the air of the entire tent...

Just a couple questions regarding an air cooled 400w hps in a 2'x2'x5' grow tent. I will be running a 165 cfm fan attached to one end of the light hood, and since I only have one fan I plan on leaving the other end of the hood open so that the fan can also suck out the air of the entire tent...