Materials needed
1. Black Plastic tub. $8.99 at target. I don't know how many gallons but it's measurements are 18" x 14" and 11" tall. You can use a 5 gallon bucket. I have kind of a height restriction in my cabinet so I needed to keep the rez as low as possible. Also, after you modify a 5 gallon bucket to DWC, it really only holds 3.5 - 4 gallons of your solution. This holds 6 gallons. It doesn't seem like that much of a diffrence now but when the plant gets big it will drink a ton. This just makes maintaining the rez easier.IMO.
2. Aquarium air pump. double outlet. $10 at wal-mart.
3. 4' Standard aquarium air line, 2 airstones, 2 .Plastic T-valves, 1 airline suction cup. $5 total also at wal-mart.
4. Net cup. 10 for $5.
5. Exacto knife & lighter ( I'm sure you have one of these)
6. Power drill & 17/64 drill bit.
The first thing that you want to do is trace a circle, in the center of the lid, Using the bottom of the net cup as a guide.
Next heat the tip of the exacto knife for a minute or two.
Very carefully cut the hole in the lid. You might have to heat the knife a few times. Remember you can always come back make the hole bigger, but if you make it too big, your fucked. So take your time and make sure you stay within the lines.
Put the netcup in the hole . It should be a tight fit.
Drill 1 hole in the side of the tub about an inch from the top. This is for the airline. Do not drill the hole in the lid because you will be taking the lid off to maintain the proper nutrient level & it will be a pain in the *** each time.
Cut 2 pieces of the airline about 4" long each and connect them from the airpump outlets to the t-valve.
Cut another 2 pieces of airline, these about 2-3' long and connect the airstones to the t-valve. Then connect a 2' long piece of airline to the t-valve.