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hi everyone I am having a bit of a quandary about what to do and I really hope one of you guys has some good advice. I have flood and drain hydroponics running as well as some soil grows, I am growing for seed mainly not bud. next week in fact Fuck it's this week I have to leave for 10 days and...

hi guys I'm looking for a little advice after coming back from a few days away my plants in the seed chamber are covered in spiders mites with webs. these plants are literally just for seeds and should be a very nice cross breed and they are almost finished. they probably have another two or...

just had a catastrophy. bit of pebble floated round the pipes and jammed the pump. everything burned to a crisp....actual crisp. so another £50 on seeds..... leads me now to think there is more cash to be had growing seed than growing weed. whats rollitup users opinions on the best product to...

I have been working on a modern cheap efficient growlight system that anyone can build or hack. Please if anyone can add to this get in contact. I have a good base design but need some help with PIC microcontroller that will run the PWM to the power supply, temperature control, timers, colour...

http://spectralworkbench.org gives you all the info needed to make an accurate spectrometer from black paper or plastic and an old cd/dvd disc. comes with all software, calibration by cfl mercury bands. seriously takes less than an hour and no money as the device can tape to the camera on your...

does anyone know deeply about the chlorophyll action and if the sugars produced etc all mix up in the plant? what i am getting at is how would a plant react if half were lit in the spectrums for chlorophyll a and the other half in b. or max out the top canopy with reds and under/side light the...

ok SWIM is fully into flower with nice scrog colas starting to form. currently in 90cm tent with 250w cfl 90(?)w ufo and diy leds: 100w true 660nm 100w true 625-635nm and pink led tape sidelighting @40w . now he has a big bag of led chips of all sorts and can throw oodles more power in. how much...

apologies if i am cheeky by posting in advanced. i am about to start autos for the first time and i had a thought that i would like some pro opinions on: as autos dont give decent time to recover from topping and training, and considering the way scrog works, i thought about a possibility to...

Yesterday there was a malfunction on the pump. In fact a small power outage had allowed the remote control to drop back to an off position at 1900 stopping the timer. Just discovered this at 1000. Capillary root mat died. Bone dry and brown. Plants still ok and happy with h enough moisture from...

Just came across this stuff. Professional quality and cheap buying bulk direct. Anyone tried it or can compare to overpriced dope nutes?

Just made a great cfl shade! Here's how. Get a cooking oil drum from the local takeaway. 20 litre metal one. Cut lengthways with grinder leaving fill hole central to one half. Punch 2 holes for hanger. Place bulb ( I'm using 125w cfl) inside with base poking out fill hole. Screw lampholder on...

Hi. I have been wondering about the ratings of led grow lights and why they are all only run at half power. Is this just to extend life or for heat dissipation? How would efficiency change running the diodes at FULL rated power? I understand this may need upgraded power systems and cooling. I am...

Hi. Had to start this lot in less than ideal circumstances and now 4wks from seeds in formulex all the way at ec 2.0. Now put into 1212 and want to change to ionic when buds appear. Can someone recommend if I should dump out the tank and refill with ionic bloom keeping ec 2.0 or shall I step the...