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been growing with T5s for 6 years and I'm still happy with them. funny the first response on a T5 forum was from an LED maker pushing their product seems led makers and growers have taken over RIU.I tried LEDS but still prefer T5s

nothing wrong with S.O.G efficient use of space and good yields. commercial greenhouses use this method to maximize profits

sorry I'm just an average low budget PU MMJ grower. I am far from being a master grower but I can grow enough high quality weed to meet my needs and those of my wife and thats all. I need

sorry misread your post meant 4-6 oz. 14 sorry miss read the original post meant ounces not pounds. not use to claims of 2.5-3 grams/watt sorry

veg with cmh and flower with LED and CMH more light and a better spectrum would be good for your plants

13 degree rise seems like a lot for LEDs I ran a 150 watt hps in a 2 by 2 without a blower and only saw a 5 degree rise in tent temprature

5lb seems light for a 4 by8'. i get 4lb out of a 2 by 4 ft tent growing 8 plants in 3 gallon pots kellogs organic potting soil and mg plant food and mg bloom under a 6 bulb T5 growing SOG with no training

T5s or MH/CMH are still the best way to add UVA. LEDs use 400-410nm leds for UV which provide little benefit a UV bulb will provide the broad spectrum UV plants use.standard T5s produce 2.5-4% UVA which is enough to produce a noticeable difference. with the power your running you don't want to...

I don;t think our plants have changed and have seen no studies to contradict. this one' red and far red a still needed by the plant to drive phytochrome but not used by chlorophyll A if enough violet light is available

have you tried running a UV bulb insyead of 400nm diodes that growlight makers use to provide UVA. you need to get down to the 340-380nm range to see any real benifit

nirvana takes CC

those will kill your plants and anything else living in your grow room. only use UVC to sterilize a grow room before planting

I use these in a 2ft by 2 ft in a 2ft by 2ft closet and can keep them 3 inches from the plants. the standard 6500k bulb eill veg great and keep plants short and bushy and will work for flowering as well or you can add some 3000k to the mix for flowering...

21 F54T5ho bulbs 5000 lumens /bulb times 21 equals 105000 same as 1000watt MH

would your HPS ballast handle MH bulbs.it would be best to veg under MH and then flower under HPS and LED

you can not use these on plants. they are for sterilizing a room before using it. have you tried this https://www.saferbrand.com/articles/treat-powdery-mildew-plants

no this bulb does not produce ozone these are the bulbs to use for ozone production

run 660nm during lights on and use 730nm for 15 min after lights off

it will sterilize a 600sq/ft in 30 min with just 1 bulb you do not want to leave your plants in you room while this is on. it will KILL EVERYTHING including your plants.use before you start s new grow