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That depends on; 1. how sterile your rez is, 2. what % O2 you need prior to flooding. Another factor to consider is duration, how long do you keep a batch of nutes? If you don't have bennies, the O2 demand should be low, although anaerobic contaminants might proliferate. 2nd, If the rez temp is...

What you really need is a quantum PAR meter: power consumption really doesn't give you too much information . Obtain one, rent or buy, and take readings from the canopy in multiple locations all across the canopy. This way you can map out the radiation reaching your gals, and adjust from...

Nice! Was it a genetic male, or a female forced into producing pollen? Either way, I hope it yields some awesome seeds for you! I can see the three gallon rez spiking; a small addition of dissolved solids will swing the ppm drastically. The LEDs don't increase transpiration and evaporation...

Hi PhatNuggz! I was just wondering the volume of the rezes. 100 ppm increase overnight, salient, and they are in bloom too...could be attributed to exudation, what PAR are they receiving? Speaking of breeding, have you considered making female pollen from a branch of your favorite lady?

Hey THC Farmers, So, I spent the day manufacturing a hybrid low pressure aeroponic/deep water culture system. I needed to accommodate some flowered clones. I'm totally psyched that the homemade aero-cloner and trial hormone concoction yielded 100% success on the first try! (Crazy unheard of...

Hi Midwest, Don't I know it, I've worked in a lot of them. Actually, I'm a bit jaded as I was running assays in which the lab billed our clients > 20K, and I only got my salary - no bonuses :( ...wish I was running the lab. I sure wish there were some capstones or dissertations out there...

:) Thanks ShroomKing! I sure do. I just spent the better part of a day trying to control heat, odor, ventilation and pH while increasing the PAR and ppm of 2.3-1-3.4 nutes in my RDWC system. Here is a question, has anyone found an optimal ratio for the micro nutrients? I'm winging it with...

Light intensity and duration affect the absorption, requirements, and usage of nutrients in plants and dictate maximal growth. Acquisition of nutrients is correlated to the pH of the media supporting the system. Optimal growth and nutrient utilization is desired to maximize biomass and reduce...