Step 3: Fresh Water Bucket
Drill a 3/8" diameter hole about 1" from the bottom of what will be the Fresh Water Bucket.
1. From the inside of the bucket, feed the male end of a 3/8" 90 degree brass fitting though the hole in the bucket.
(Place an O-ring on the inside of the bucket at the base of the 90 degree fitting before pushing it though the bucket wall (Photo 2). When the fittings are tightened the O-ring will seal the hole in the bucket.)
2. From the outside of the bucket, thread on a female 3/8" barbed hose fitting.
3. Thread a second male barbed hose fitting into the 90 degree fitting inside the bucket. (Photo 3)
4. Angle the open end of the barbed fitting downward until it touches the bottom of the bucket. (photo 3) This will help to pull water from the very bottom of the bucket allowing it to almost completely empty the bucket before it needs refilling.
Alternate Construction Note: If you don't want to add a hole to a perfectly good bucket to dedicate it to this project, you may be able to cut a hole in the fresh water bucket lid at the very outer edge and snake the hose down into the bucket (make sure the buckets will still stack). This should also work, and eliminate the need for the brass hose fittings (less $'s) but, the hose may curl and not stay submerged especially because the hose will be coming out of the top of the bucket and will have to travel down to the pump on the ground.