Quote Originally Posted by rhizome
Umm,yeah...to a point...
Yer bumping up against limiting factors. We'll go to the U of Wisconsin for a definition.


In most of the small rooms that I've seen, the limiting factors are, in order, ventilation and then lighting. You can throw a bazillion $ worth of chemistry @ a plant, but if it doesn't have sufficent C02, the vapor pressure deficit is too low, or it doesn't have enough light, and it can't grow well. As the manufacturers of purpose specific nutrients formulate assuming that, if you're spending this ind of $ on consumeables, you've spent the $ for sufficent ventilation and lighting, they formulate assuming that the plants will be able to use the nutes @ the rate applied.

I dunno- I find vast differances in the response of plants to differant nute regimens (...mmm...COGr...), but only when they're allowed to fully express- there aren't factors limiting growth that will show up before the nutes do. If you don't have enough light, or your plants are running too warm, yer gonna see that way before anything nutrient mediated.

Once you get a space really dialed in, feeding has a pretty marked effect on expression of pheno- but if yer not into that whole thing first, then yeah, they all pretty much work the same.

Spend $500 bucks on enviornmental control and run cheap nutes for a couple rounds until you're sure that the space is all that- by now you've broken even with the $ you didn't spend on 2+.

Buy the expensive stuff now that yer broken even- you'll be much happier, and the pricey stuff will be worth it for you.

My $.02 US ( not worth much, and dropping every day...)
very good points man!
kinda like having a brand new Corvette and adding nitrous oxide while driving on bald tires.