For some reason this house stays very dry, humidity around 20%. We're too cheap for a humidifier, so we go for the 'towel method'. Without the soaked towel we wouldn't be able to achieve proper humidity percentages. No need to worry though, we change it every day. :mrgreen:
Alright so this is me and my roomate's first time growing, we decided to use a closet about 2.5ft x 2.5 We have a 400w HPS grow light and an Air Purifier with an active Carbon Filter to keep those plants from stinkin' up the house. We haven't gone too high tech, just a simple power bar run off a...
From your problem it sounds like you have a Nitrogen defficiency, try using some plant food spikes with a 12-3-2 NPK ratio, and see if that works for you. Best of luck.