Did those brown spots first turn kind of a golden yellow color, then brown? If so, then you have some magnesium deficiency going on. I don't know if mg is included in foxfarm soil. the leaf curling is strange, looks like maybe a heat problem, lack of water, too much fert. I'm tired and I don't want to take the time to sift throw all the data, I'm sorry but I'm off work and really tired now. But I can still help you. The way for newbies and oldies, by the way, to get a good grow is not to screw things up from the beginning. So what you do is this: you use foxfarm soil or other potting soil of good quality and use kind of a small amount of powder fert you get in a box at your grow shop, like foxfarm's fruit and flower in the yellow box or tree frog or Whitney Farms 5-5-5 at a hardware store. grow shops don't usually carry whitney but hardware stores do. The reason why you want these ferts is because they come with the bacteria and fungi already in them which aid in roots taking up the ferts. If you try Lilly Miller, you'll be disappointed because there are no bacteria. Put one cup in soil mixed well and in a 5 gallon bucket. then you just add water when the soil is dry. chances are you won't have anymore problems. I'm so tired I keep making mistakes as I type this and it's taking forever. anyway, try this idea in the future. also use good quality lighting if you can afford it and put a fan on the plants to knock them around a little to strenthen the stems. otherwise they fall over. one cup is a little too much as foxfarm soil is suppose to have fert in it already, but with these ferts, overfert usually isn't a problem. you can cut back on the fert a little if you want. this takes all the guess work out things and I think you'll be happy. use distilled water. if you want soil that is great and don't mind spending a little more, search "sunny girl soil" on the web, place an order with them and they will ship it to your address. just follow the directions on how to use the two different parts, one on the bottom and other on top, and just add water when dry. easy. when plants are really damaged it's hard to get them back so preventing problems is the key. alot of bad info floats around the web and I've been trying to put a stop to it for years. I'm not a scientist but I suggest that you do a little reading of the magazine called the growing edge. has the info everyone needs to have the grow you want. amazon has some copies. it's actually a magazine you might be able to get at a good bookstore. you can try the web for help but only use sites that have genuine data.