Hey all, Just received my light, a 400w hps w/ mh conversion lamp. I have a 4'x4' space that will be enclosed by white poly from ceiling(7') to floor;I have an air filter will I need a exhaust fan, too? I bought some of those jiffy pots 3" to germinate but I heard that the lateral roots may not be able to break through when I transplant. Is this true? If so what should I use? I mixed my own soil from various recipes I've seen on the web I know I should test ph and nute content before I sow. How often should I check these after I sow? I have a ph/nute meter and I also have the capsules for testing which is better? I also have some organic fert 20-20-20 will this be enough straight through or should I get the bloom fert I see advertised when it's time to flower? I plan to start flowering when the plants are 12-18" how much will the plant yield after budding? Approx. how long will I have to wait to taste my sweet bbs? Any suggestions/ideas are welcome..