Iv just bough this cheap ppm meter
http://cgi.ebay.co.uk/Digital-TDS-EC-Pool-Water-Quality-Tester-Meter-1999-ppm-/320649702211?pt=UK_HGKitchen_SmallApp_RL&hash=item4aa8362b43
im new to all this and im stuck iv bough some CANNA nutrients and on ther grow guide it says ppm (hanna) (eutech) and...
Iv just got two MEGAMAN100W E40 4000K Cool White Self Ballast Clusterlite CFL's
from work on the packaging it says 6700 Lumen is this enough for doing a 12/12 sog or any other type of grow im new at this and could any one please tell me what is the best bud to start off with...