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The cord from the TV is probably 18awg. This can safely carry about 275w. Run your circuit in parallel. It's likely that the circuit you're using is rated at 15 amps or about 1400w continuous load.

I posted this in another thread. I think that it is important to run a timer to really take advantage of this system. aero/nft hybrids are even more prone to root matting.

Your system is very nice, gohydro,(+rep) but I think you'd have to get your cost down to go commercial. The GH aeroflo2 sells on ebay for $340 for a 20 site to $890 for the 60 site. What made you decide to DIY vs. a turnkey solution?

So, the soil has time release fertilizers in it? Any signs of nutrient burn? Are you letting the soil dry out between waterings? What's the temp in the room?

bump, cause our search sucks

68' for the res is ideal for maximizing dissolved o2 in the water. 75 is pretty warm, but probably ok. You can use additives like hygrozyme or h2o2 if you start seeing any infection. Once the roots hit the water, my plants did a lot better after I added an o2 stone to it. This system is marketed...

Whoa buddy, calm the fuck down. You got no reason to be coming at me like that. He's obviously growing a primarily sativa strain that is already growing tall very quickly. I'd expect these to triple in height after flowering. That means he's expecting 24" of growth if he goes in right now...

Are both plugs running off of the same circuit?

You can still do a sea of green in soil. It just means you have many small plants (usually clones) and flower them quickly. This is beneficial because t5s don't provide the penetration that you'd need to really need for bigger plants.

You need a bigger fan. You have a pretty big grow there. I'd see it as a worthy investment to buy a high-end fan for exhaust. You'll do much better if your ducting is ran in parallel rather than in series. And avoid unnecessary lengths and bends.

Those lamps are better suited for a SOG grow. Have you considered adapting your grow methods to match your lighting?

Check this out, I drew up a little Search tutorial

If heat and humidity are OK, consider supplementing CO2 instead.

Foliar feeding is also a great way to quickly recover from many nutrient deficiencies.

Using all blue bulbs during veg will definitely keep the internodes very tight. Reds normally will help induce bloom, but that's a great question when autoflowering plants are involved - I wonder if anybody here knows that yet...

Scarification is a technique used to try to coax a clone into rooting faster by giving it an easy spot to root at. The system you use doesn't really effect this.

What kind of soil are you using? Did you push it down when you planted? Describe your ventilation system.

True that... +rep

Man, you better get them bitches in 12/12!

[/LIST] This chart is bullshit. I suppose if you were growing in shitty soil and not expecting huge growth or yield, this might be ok. It's really probably just an idea of the bare minimum light that would keep a plant growing, but you will never achieve optimum growth at these levels. If...