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stick you finger in the soil and do not water until the top 2 inches of soil feels dry I grow in 5 gallon nursery pots (plastic) and water once a week.for nutrients this chart might help. as for cheap LEDs they are actually less efficient than CFLs as you can see the vipraspectra 450 watt draws...

looks O.K as long as you use enough perlite to give you good drainage . I use an inexpensive potting soil http://www.homedepot.com/p/Kellogg-Garden-Organics-1-5-cu-ft-Patio-Plus-Premium-Outdoor-Potting-Mix-681/100160888?keyword=kellogg+organic+plus+potting+soil with about 25% perlite and espoma...

have you looked at grows on youtube using various lights?I own 2 cheap Chinese multiband grow lights (mars hydro,hollandstar) as well a a DIY bridgelux eb strip light. they all grow plants but my multiband units (blurple) started losing diodes in the first 6 month. I'm just a PU MMJ closet...

I am no expert on organics . just an average PU MMJ closet grower working on a budget but I have had good result using Kellogg patio plus organic soil and epsoma tomato tone' I recycle my soil just cleaning out the old root and adding tomato tone before planting and feed them more tomato tone...

don't know. false claims are so common with led makers it is hard to know what is true. I don't see these kind of false claims and cherry picked studies with HIDs or T5s. those are proven performers and do not need junk science and false claims to sell them. for the price of this light I can get...

just found this on amazon https://www.amazon.com/GROWant-G3HiPAR-Aluminum-Horticulture-Spectrum/dp/B072LRC23K/ref=pd_sbs_86_1?_encoding=UTF8&psc=1&refRID=42G7KQ09JF6DKS078H8C&dpID=51HxIVGwAJL&preST=_SX300_QL70_&dpSrc=detail uses german made osram diodes and has good reviews. looks like a great...

fine if you like seeing colored spots on your plants. the diodes are so far apart they do not mix well at effective distance.most of those cheap chinese grow lights start losing diodes in the first 6 month.to get good plug and play grow light you will need to spend atleast $400 to cover a 2 by...

unfortunately math can be used to prove anything. I trust my plants to tell me what they like just like any real farmer would do. there is NO substitute for experience

your plants will tell you if you have too much light. I'm running 37.5 watts/ SQ FT with T5s and if I get my light closer than 12 inches from the canopy I get light burn. I need to ask why dual spectrum CFL ? HPS has all the red light you need. a standard 6500k would be better as supplemental...

a couple of these mixed with those 6500k for flowering may help both yield and quality http://www.ebay.com/itm/54W-54-Watts-T5-Bulbs-4-ft-48-High-Output-Fluorescent-Grow-Lamps-Bloom-Veg/261229975287?ssPageName=STRK:MEBIDX:IT&var=560206106299&_trksid=p2057872.m2749.l2649 but lighting is one...

that light probably only uses 200 watt from the wall but would provide some benefit in your grow tent. as long as you have adequate ventilation I would go ahead and use it to see how it works.

you should not listen to me. you should take the time to do your own research. learn about lighting and plant physiology by talking to experts and reading the numerous studies that are available online. analyze those test to learn what they are really telling you.there are a lot of people with...

LEDs do not contain UV light or much violet light. T5s gave me the same yield (per watt) but better taste and potency. I do use plant bulbs mixed with cool white so I am able to get 5% UVA and an spd that is closer to natural sunlight.all the major LED makers use multiband light with only a...

you could use a standard mean well driver or even an eBay driver http://www.ebay.com/itm/18-30x-3W-LED-Driver-Power-Supply-600mA-for-30pcs-3W-High-Power-LED-Chip-/371850959882?hash=item56940b5c0a (will drive 4-2ft strips) drive and you could use them a supplementary lights. they have spring...

if your considering building your own grow light and you have decided to use LEDs have you considered bridgelux EB strips?https://www.digikey.com/products/en?dc=64113 these are as efficient as the best COBs,can be run at 700ma with no heat sink, and provide more even light distribution so can...

I veg in a 2ft by 2ft closet and flower in a 2ft by 6ft closet. I'm a PU MMJ growers and am able to produce enough to meet my needs and those of a cancer patient I'm helping out so my answer is "NO" they are not a waste of time. it is also a fun hobby

CMH bulbs have been around for some time and many of them run on mechanical ballast. interesting that people are just now discovering that they work great for growing plants.I think cannabis growers are in for a big surprise when they see how well a true full spectrum light grows plants and the...

the key word is "on this form" you are listening to a small but very vocal group of people. you need to do your own research online and talk to professional growers. the growth of LED grow lights is being driven by cannabis growers but by using false claims and pseudoscience the LED makers are...

Chinese grow lights have gotten a lot better and all the high end grow light makers use multiband LEDs. they claim that plants can only use 40% of the light produced by white LEDs . vipraspectra and other commercial LED grow lights were made for growing plants. vero's and white COBs were made...

there is no devil. there is enough evil in the hearts of men to account for all the evil in this world. the first step on the road to enlightenment is to accept what you are and then decide to improve yourself