Wow greenthumbtraining, no nutes until 4 weeks of veg? That seems like a long time for the girls to go without any food! You didn't give em anything? And looking good supchaka, those buds look like they're gonna be mighty tasty! I did a coco grow a little while back, I liked cocos ability to buffer the nutes, a lot more forgiving than hydro, as far as yield goes though, I have yet to find a growing method that produces better than DWC.
That's too bad to hear about the leaf curl newby, I've also experienced a little bit of "the claw" but nothing too serious, just some of the tips, it seems to have worked itself out though. As far as the tri-meter goes, I love it! Paid like $165 for it on plantlightinghydroponics.com, they carry two models , one that measures EC and the other that measures ppm, along with temp and pH obviously. Hanna makes a "guardian" model that is quite a bit more expensive that does essentially the same thing but I think the tri-meter is the way to go from a money standpoint. In a perfect world I would go with the Gro-bot evolution, if you haven't heard about this rediculously awesome invention you should go check it out, total grow room automation. You pay a pretty penny for it though. Cool thing I find about growing though is that you also grow with it. I've built all my systems I use and while the first ones were simple, they've become progressively more involved and complex. That being said, I think I've zeroed in on a good setup at this point and I'll probably stick with a similar style for the next go around. I'll post some pics a little bit later so you can see the progress, the largest one is juuuuuusssst touching the screen, measuring in at just over 12", but talk about bushy!
Current stats: 5.8 pH, 770 ppm, 68 degree nutrient solution