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And still... i have no idea what is wrong with her... She grows for a couple of days then she just drops... could it be bad genetics ? The soil is the same , the ph is the same... i'm really clueless at this point ... :? Her sistes is doing just fine ... i also went 400w HPS :) thank you...

You are perfectly right ! the MV lamp is in the blue spectrum 3400k . I got inspired by your setup and came up with this rigging (as opposed to having the 3 lights just dangling and a fan taking air out). Things were looking worse and worse for the little one, so i repoted her into dry mixture...

i followed your advice, left just one lamp (i was using 3 lamps not because i want them to grow faster, but i'm trying to compensate the fact that they are mercury lamps not sodium ones... and they have an average lumen output, aprox 5500lm ) your 150w hps probably gives out about 15.000 lm...

Thank you for the swift reply. I have good ventilation, ( 3 stage - 200w exhaust fan) if i increase the power on the fan, the humidity drops under 20% (with the humidifier at full power) , but theres not much i can do about the temp thou... its 90 F (32 celsius) room temp (95 outside - 17%...

i used this system : and all was good. Yesterday after reported them, one of the plants started to wither This is my setup : 3 X 250w mercury lamps at 10 inches from the top of the plant. temp range 80-95 fahrenheit (25-35 celsius) 18 hr light cycle 6-3-3 NPK fertilizer 10 oz...