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Wtf is going on, i have 2 hp pen. im trying to ph plain water and both pens are jumping up and down by like .5 up and down. i dipped both in ph 7.0 and they are fine? what do you think?

So i have this blue i think 55 gallon barrel that i wanna use. But it stinks like vinigar, is it safe to scrub it out and use as a resivoir? btw i use rockwool. i dont know if it matters?

http://www.youtube.com/watch?v=U4ceVJjsBh8 http://www.youtube.com/watch?v=yU5434lQmQc http://www.youtube.com/watch?v=YO__2bBnFh8&feature=related The name of this dude is "Pretty lights" all his music is free at prettylightsmusic.com

Flush really good with ph'd water. she'ss be just fine.

Coa coa is just like rockwool, when you first start, the plants arnt gonna need to be feed everyday, you have to work your way upto everyday. get yourself a ppm meter and stay under 1200ppm. oh, and dont feed with only water every other week, flush once every few weeks or somehting, not...

so isnt there a big whole in your floor now?

So do plants use any blue spectrum at all during bloom? Does it benefit anything at all?