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This is the official update thread for the 4th party cup grow-off. Contestants must provide a photo-update every weekend from here on out, or they're out. The rules are simple: 1}MUST be in a 16oz plastic party cup, 2}MUST be started and finished under the same light source, 3}MUST have your...

Happy New Year to everyone and welcome to the 4th official party cup grow-off Here is the basic outline of the comp. For those involved with the last comp it is the same. Party cups (16oz) Only Any indoor light source Participants vote on winner Prizes are proudly supplied be Inda-Gro...

This is my latest diy creation. It has 10 x Cree XTE warm white leds and 4 x 10w red:blue chips. The 10w chips run 8 x 3w 660nm and 1 x 3w 445nm. They will only be run at 300mA so they should run a total of 6w each for a total of 24w. The Cree leds will be run at 1.2A. This works out that they...

I have a couple of chinese luxeon led panels and i was just wondering how much better are cree leds. I have noticed that the luxeon panel has to be within 10-15 cm of the canopy before it becomes very effective. Most people go on about how good crees are, i was interested to find out how much...

I finally got my PCB and 3w leds for it, soldered them on, connected the driver, plugged it in and not much happened. They barely lit up. I checked the voltage from the driver to the board and every thing was fine. I also noticed that when i touched the edge of the pcb they light up a slight bit...

I purchased a 50w ufo (25 x 3w) and after a couple of hours it stopped working. I believe the power supply for the leds has blown. The company is sending out new light so i was going to repair the other one. I have been trying to find a driver to suit. This is a pic of the driver specs that was...

I currently have a small grow area. L70cm x H55cm xW40cm. so im not after and high power lights. My question is which led combination is going to be better for my area. I have found a pack of 10 x 60 led 3w E27 bulb(3/60=0.05w each led) for just under $50 or i have also found a DIY led panel...

I have just started a bagseed in a bubbleponics setup and was just wondering when i should start the nutes. It has just popped up and is 2 days old. There are no roots showing out the bottom of my pot yet. I used the Dutch Master nutrient calculator and it says to use nutes from week one. It's...

I know this is a question that has been asked and answered 100 time before buy what is wrong with this plant. I gave it a real light dose of Dutch master gold nutes. The ppm was about 550 and the ph was 6.0. I believe it's a nitrogen deficiency. Does anyone have any suggestions?

Hey everyone i was just do i need to change from 6500k lights to 2700k light for auto flowering stage. I currently have 2 45w 5500k + 4 23w 6500k lights. I just wasn't sure if i have to change the spectrum as autos grow on at the same light hours the whole time or should i mix it up by replacing...

I am getting ready for a second grow and i was wondering which option i would be better off going. I only have a small space so hps lighting is out and i have found these two items on ebay and i was wondering which one is going to be better. The first one is...

Does anybody know if auto's stop growing in height when they start to flower or do they just grow to the light. I am worried that my auto berry's are not going to stop growing. They are currently about 1 inch away from my cfl's and i dont know what to do. I dont have any more room. Also is it...

I was wondering if I change the light cycle of my auto from 18/6 to 12/12 will this help with flowering or will I be better off leaving it at 18/6

When do you switch from grow nutes to flower nutes. Do you change when they go into preflower or do i wait longer? Do i swap and use full strength nutes straight away or do i slowly increase the nutes? Any suggestions?

I have a fem auto berry from Dutch passion and was wondering if there is any way to get it to seed. I have heard stressing it will help but i was wondering if there was any other way. I dont care if the seeds are fem or not. Any suggestions?

When i change my res i add nutes at around 850 ppm for veg. This brings the pH to around 6.3 to 6.5. So i add pH down then i measure the ppm and it is up around 2000 to 2100 ppm. The back of the bottle says pH the water around the 5.5-5.8 after the nutes are added. ​Is this normal, or...