Medicine is expensive and, luckily, I am now able to grow my own where I live. I started growing in this 2x4 Gorilla Lite tent and "piece-meal'ed" my setup together. I started with one Mars Hydro TS1000 and was fortunate enough to get a second one before I started flowering. I used a 6-inch AC Infinity fan for exhaust and a 4 inch AC Infinity intake fan. Using a Gorilla carbon filter and it works great.. I added an Exhale CO2 bag at this time not really realizing that it wouldn't do much good for a few weeks still... It's impossible to find oscillating clip on fans where I live so I had to make do with some non-oscillating fans. Grew in 100% Purple Cow Indicanja soil and did not give ANY nutrients during the vegetative stage (they did just fine). I probably under-watered versus over-watered for quite some time as folks at the friendly local grow store kept telling me that I'd inevitably overwater at some point as a first time grower so I waited a long time in between watering fairly often...