Hey gang. I've been doing some research on growing lately, and with the minimal amount of space I have to grow in (36" h x 20" w x 24" l) and my thriftiness, I've decided on using a bubbleponic system. There's actually a really cool hydroponic shop in town and I've talked to the guy who owns it, and he's given me a lot of advice and information. But I still have a few questions. 1) I'm planning on using a rubbermaid tub, but I'm not sure which to use. The 18 gallon is close to the correct size, but I'm afraid it's just too damn tall. It would force me to use some kind of pump to get the water to the plants, which is an added expense. I also think it might be too complicated; I try to keep things simple and the added complexity might suck. Deep water culture seems to be the most efficient method, but to do that I would need to fill the bucket a whole bunch, which is a waste of nutrients. Am I worrying too much about the drip system? Or should I look for a rubbermaid container that isn't as tall? 2) The lid for either will be around 18"x13". How many plants could efficiently fit on top? I have six 4" buckets I've purchased already, but when I put them all on top they look too close together. Would five be better? Or even less? Thanks for any information you can give me.