MJ and Tiny, coming through in the clutch....

How many plants you grow depends are a few factors, how much you spend, how big the space is, what is the likelihood of getting caught, how stinky you want your place to become, how much money you want to spend. Decent people here can help you with the grow, it ain't hard and you can get your questions answered. Unfortunately, I can't vouche for the accuracy of all answers, but oh well.

Personally, I like the idea of using 5 gallon buckets for DWC, for several reasons. It isolates each plant so if you have a fert problem in one it may not be shared by the others. Also if you have to move containers, you can do so more easily than lifting a larger tub full of water and a heavy plant. That's cumbersome, difficult. If you only want to grow two plants, then just get a couple black buckets with black lids. You can probably use a 6 round hole saw to cut a hole for the netpot, or buy lids from the store that are already cut. Northern Light and Garden in Wash. and Oregon will probably do this for you if you wanted to have them shipped and can't find what you want locally, if you don't live in the area. The store has a site - NORTHERN LIGHT & GARDEN

Remember to mix the ferts with water in the container first, don't mix them together without putting a gallon or something like that in the fert container first. Ferts shouldn't be mixed together without immediate dilution, so put water in first. Otherwise element bind together and become useless.

Air is key to making DWC work. Alot is good. You can keep your air pump a few feet away, I don't think it matters as long as there's no leaks in the tubing. Run the air tubing, which you can get in fish and aquarium sections at walmart, along with airstones and air pumps, in through the very top of the bucket, right under the edge of the lid. This way when you have to take the lid off you can do so without disturbing the air tube. It would be smart to get an additional bucket to set the plant in temporarily without water, when you need to change the water in the grow bucket the plant usually resides in. Otherwise you'll have to have to have someone hold onto the plant for you so the roots don't get damaged.

I don't know anything about Humbolt ferts. This should be interesting. What do these contain? What does the label say?