<a href=showthread.php?s=&postid=9249011#post9249011 target=_blank>Originally posted</a> by ccoral
sky dancer, how do you test the flow???
I thought you 'd never ask...
I started with a 5 gal Home Depot plastic bucket.
I used a Dremel and drilled a hole at the bottom of the bucket so I could fit the nose of the nanostream thru it.
With the nanostream in place, I filled the bucket with water (ALL THE WAY TO THE TOP). Then I measured and emptied 3 gallons of water out of the bucket and marked the level of water left in the bucket.
Then I filled the bathtub with water. The tub’s water level was high enough to submerge the 5gal bucket.
I turned on the nanostream. The pump was running and the bucket was staying full as it was submerged in the bathtub.
With a stopwatch at hand (get someone to help…)
Using both hands I lifted the bucket a bit until the tub water level was just above the bucket’s top. The helper started the stopwatch and I measured the time it took the pump to empty the 3 gallons of water out of the bucket.
NOTE: IN ORDER TO AVOID CREATING ANY HEAD PRESSURE ON THE PUMP, AS THE PUMP EMPTIES THE WATER OUT OF THE BUCKET, YOU MUST HOLD THE BUCKET WITH BOTH HANDS AND RAISE IT SLOWLY, SO THAT THE WATER LEVEL INSIDE THE BUCKET IS AT THE SAME WATER LEVEL AS OUTSIDE OF THE BUCKET (tub water level).
Using this method, I took 9 flow measurements and discarded the highest and lowest two measurements.
The formula for the calculation: GPH= (3gal *3600sec) / (the secs on the stopwatch).
BTW, the same method should work on the Hydro's and other pumps with any size of "nose".
My next project is to measure my Oceanflo MJ1200 MJMOD.:rollface: