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Are you cloning in the system? If it's not for cloning, I don't think I'd bother with hydro for a couple weeks. You'll probably get more stunting from putting them into the dirt than would counteract the slower growth from just starting them in it.

Hey gvega, I've been working on the pump sizing challenge as well. I've had a little help from a member named SOG. His suggestion is 15-20GPH for each sprayer, so 10 sprayers = 150-200GPH pump. Also, have you considered using a bypass for the pump?

I was talking about light pressure. I said nothing about HPS or spectrum. Get your shit right if you're gonna run your mouth.

So, what's up buddy, you gonna tell me that your CFLs will penetrate leaf matter as well an HID? How come you didn't quote me there? I though you know soooo much more than everybody else, go ahead refute it!

Damn, TeaTreeOil, you're sounding like a swine backed into a corner by wolves. There's no need to be a dick to me. I was just having a friendly discussion. You've quoted me out of context. That is a real dick-hole maneuver if I've ever seen one. At this point, you look to me like a little...

I get it. Thank you. I've been running 1 on 5 off but I've been thinking about extending the off time. Do you only use a 15 min on time because of the increment on your timer?

Pretty much. The thing is, with CFLs, that this weakness can also be their strength if properly exploited. You have the ability to position them very closely to the foliage and spread out throughout the whole canopy or plant. It is my opinion that a plant can make greater use of light if you...

Gotcha, thanks again.

Have you tried other timing combinations? Is there a reason you've chosen this timing?

The math makes sense, I won't dispute that. Maybe I wasn't really explaining it right. However, we are looking for real world application. You can't stack 1000w of CFL in the same space as an HPS bulb, so they need to be spread out. If you pack them very tightly together, your application...

I won't buy those crappy sunleaves pumps anymore. I broke the little plastic holder tabs off of the impeller cap on my last one trying to get it off. Cheap plastic piece of shit.I can't get a new one, so the pump is junk. So, maybe a 700GPH pro-pump? The 500GPH version drops to about 325 GPH at...

Estimating 36 total sprayers. 1/2 PVC, no 1/4"??? I'm hoping the bypass will take care of excess pressure and I'll kick myself if I buy a pump that's inadequate. Head to the first manifold is about 4' from the pump. Do you still think I should get a smaller pump and if so, which size?

Earl, your roots look very large and matted for an aero system. Is this just an illusion from the picture? I'm used to seeing very fine hairs in my aero systems. Do you run your sprayers on a timer?

H2O2 is hydrogen peroxide. When you add it to a reservoir, it disinfects it. (This is counterproductive if you use any beneficial microorganisms.) As it breaks down, it gives off oxygen and water. It is not a necessity, but it can help if your system does not produce enough D.O. because of...

Wow, great discussion going on here! I have a couple things I'd like to add. Light differs from sound. Sound is a wave that effects matter. When two sound waves hit 1 particle, both waves will effect it. Light moves through space. When 2 lightwaves hit each other, they do not have the same...

Thanks again, SOG. So you're saying not to glue for the prototype phase, but then once everything is tested then glue it for permanent install? Thanks for that link. I think I've decided to go with 1/2" PVC and use the "up and over" technique you'd suggested. I've decided to use only one pump...

I would not suggest waiting until the third node to feed in this system. Growth is too explosive. They will need nutrients sooner. Though nute load and ideal PH are both strain specific, I'd suggest at this stage to add to 0ppm RO water - about 200ppm of Cal Mag and 100ppm of high nitrogen...

Coming along nicely! Is that a little bit of an N deficiency I see?

It's not just weight. Denser buds will provide more smoke, too. It means the difference of cramming a little popcorn bud into a pipe and realizing that you'll need to squish a couple more in there, or sticking a dense little nug in a bowl that produces hit after hit of milky smoke. Weight is the...

Agreed. I'll go with the 6". Thank You +rep They will be pretty close. The worry of entanglement was directed at the suggestion to use tubes instead of tubs. My concern is fitting the root ball out of the 2 7/8" hole when I go to move the cups into my other system. I'm hoping that because the...