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This is one of those questions that gets so many answers but I ask because I have sprouted some bag seed from 1984 which is in the 30 year range, is that crazy or has anyone been able to sprout much older beans?

I know that 1 led must have went out but I can't tell which one. I have verified that it is not the driver but a link in the chain so does anyone know the best route to figure out which led went out? I can't visually tell and was thinking I would have to use a voltage meter, anyone have to deal...

I have used LED lighting for years and currently use blackstar panels but have came across some bulbs that are composed of 3 watt diodes x 7 (the model I bought) Has anyone used these and how are they able to use 3 watt diodes without a driver or is the driver built into the heat sink? Looks...

A huge overlooked issue lots of DWC growers over look is root mass and the effect it has on volume in the reservoir. By the time your 2 weeks into flower your roots are taking 1/4 to 3/4 a gallon of liquid volume and if you don't take the loss of water into account it will throw your nute levels...

I have 2 - 240w Blackstar panels and I noticed that on each panel it looks as if one of the center diodes are burring up. There is char/burn like marks on the inside of the glass but surprisingly when turned on and looked at, they are indeed still working but way dimmer then the other LED...

Hello all, I will being doing a pure LED grow from seed to finish. Please understand that this will not be a best case scenario in terms of yield as I have seedlings spaced 2 weeks apart and have 2 seedlings that are recovering from an over-watering issue due to evil pete moss. To show you...

I have a friend who gave me 4 bags of Miriclegrow Perlite and noticed that it's enriched with nutrients so I decided to flush each bag with 10 gallons of water. I figured the Nutrient was sprayed on or powder based and that it should rinse out fairly easy. In the event there are nutes left it...

Why 2 small LED panels should yield more then 1 large panel I've been studying LED grow light technology for some time now and have been watching every grow journal I can and have noticed a clear trend that seems to be reoccurring regarding multiple small panels out yielding a single larger...

I'm curious how this in done because if you grow from normal seed you have to flower to find out which are female. Once you have identified a female do you revert back to the veg lighting schedule and are then free to take your clones? I can't seem to find any information on cloning from...

I am curious to know what the maximum or recommended lighting would be for a 48" x 24" - 50" high grow tent. Please keep in mind that noise will be a consideration since the tent will be in the bedroom. I am also concerned about heat and safety, I don't want the thing starting fire if I was...