I am using solid black buckets, and solid black lids, the hoses on the side of the bucket to measure the water level are blue I sealed the holes I drilled for the black fitting with black rtv silicone I sealed the black fitting with black rtv silicone. I am using blue air stones I purchased from Walmart (I am a little broke) I am using black solid hose to feed from air pump to air stones, I also sealed the holes in the lid were I put the air hose through with black rtv silicone. I am going to completely cover the STG cube with hydroton when I put them in the buckets.