You're setup looks exactly like the videos!!!

Thanks - that's what I was going for.
Hard for me to do it much different when I didn't know anything about growing when I started

The hardest parts of this process, thusfar, has been figuring out a nutrient schedule and deciding on the dripper timing.
In the Mr Green videos he doesn't really explain the length of time his drippers run nor what volume they allow. Let alone any real idea about nutrients other than saying to "read the label" - lol

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dude, I know what you mean... I remember way back when I watched his videos and I was getting into growing I started using a drip system and I had to do a lot of experimentation.. now I know that --> its all about trying different schedules in the beginning and watching the plant daily.. respond to its changes and keep adjusting until you find the right schedule.. if the solution is gushing (steady stream) out of the dripper, then only have it on for about 5 minutes every other hour.. if it is just dripping normally out of the dripper then have it on for 10 minutes or so per hour .. watch two main things.. the saturation of the rockwool (how 'heavy' they are) and how the top/new leaves look every day (if they are wilting or not).. this is related to the plants transpiration rate.. watch the level of the reservoir.. as the solution level drops, so to will the drip rate cuz the pressure drops and the pump isnt as efficient.. try to pump the most solution through per day without making the plant leaves wilt. but its really complicated by the fact that its a balancing act with all the other environmental and genetic preconditions.. like amount of light, access to oxygen/co2, nutrient ratios, stage of life.. etc for instance, if your plants grow 3 inches in a single day and get closer to the light, the transpiration rate will increase, making them suck more water from the res (roots WILL find their way to the res).. which drops the res level significantly, which then makes the drip rate fall dramatically .. it gets really f^!%#ed up man..
I think a decent rate to start with is a dripper at 4 drops a second and running 5 minutes per hour for veg .. but toy around with it and watch your plants! good luck!

i thought i would share this site with you. I remember you saying you couldn't find the dripper hub so here it is. i love this site because its one of the only ones that sells actual cocotek cubes . http://www.wormsway.com/detail.asp?sku=R154DT

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i also have the exact same setup influenced by "mr green". i germed on 11-21-08.

Be careful with the drip manifolds, they are very unreliable as it relates to flow rate since it does not take a lot to clog them up. I messed with them for quite a while and finally abandoned them in favor of just a 1/2 inch tube with the little drip line connectors (you use a little hole punch and then pop them in) and an end cap. I was amazed at how much more flow I had. Anyhow, I'm sure your set up will work out for you, just thought I give you heads up, so you know what to watch out for

Unity

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My set up was inspired by Mr. Green too. I've got to say I haven't had any major problems with it yet (started about 3 weeks ago). What do you do for your watering cycle? Mr. Green doesn't really specify. I have mine set for 30 minutes 3 times a day. My plants seem to like it. I've tried longer cycles but then they just start to droop.

I have mine set to water 3x per day for 10min each time (lights on 24hr). The dripper tips I have are 2 gallon per hour, so it's about .2gal of nutes per cycle.
I've experimented a lot, and am trying to stay on the slightly drier side. I was definitely overdoing it previously (20min every 4hrs w/2gph tips) - plants got droopy right away after that change.
I had originally bought 1/2gph tips but felt they weren't giving enough water in a decent amount of time, so I "upgraded" to the 2gph tips.

Just had a mild setback. I was doing some finishing work on the flower side and got it to the point I could test out my 400watt HPS. It came on instantly and quite bright. Then after a few seconds the color of the light started to change from white to more orangy (as expected). Then about a minute after I fired it up the light got quite a bit brighter then made a sound (didn't hear really well as I was vacuuming) and the light just dimmed down to almost nothing. I turned it off then back on and just see a little "lightning" near the end of the bulb away from the socket. Luckily this has happened well before the room is needed, but I was just at the flippin hydro shop this afternoon. The shop I go to guarantees any bulb they sell for a year, so it shouldn't be a big deal to get a new one. Just worried about it being a ballast problem. FYI - I cleaned the bulb with Alcohol before putting it in and did not touch it with my hands at all.

Checked my Veg side pH this evening and it was 6.0, so lowered it to 5.7 and moved the lights up a bit again.

Tomorrow will be cleaning/tank change day. I'll make sure to post pictures of the progress then.

Thanks for the advice on the drippers. I've heard they are prone to cloggage, so have been keeping a close eye on them daily. So far so good, but if I do run into issues I'll definitely give the method you outlined above a shot.
What you describe seems to be how Prnkstr's system is setup - is that right? Here's a link to Prnkstr's journal for reference...

Prnkstr's Second grow! Various Strains

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Yes what he describes is how mine is set up. I have a 1/2" main line with an end cap on it , i then made smaller 1/4 lines coming off that for my drip lines. I used 3 drip connectors on each plant with 1 backup line for each with no connector. works pretty well i water for 15min 2 times a day. midnight and noon.

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