at or beklow the recomended rated pressure a 50GPD membrain will only put out 2 gal per houre at a max rate (unless you are over pressuring it) so you are taking 4 hours to fill your 8 gal bucket at best with a 50 gal membrain. Also by dropping the temp down to 5 degrees C you can drop your output up to 30%. A TFT type membrain that we comenly use in the hoby and home drinking water is designed to have a minimum of 40PSI (this is what it to permatate the membraine) there are low PSI membrains out there and different types but the most commen is a TFT as it is what kent and all of the retail ones are.

I just filled 10 gall on the floor of my garage in 1 hour :rolleyes: wen't out and forgot I was filling a 5 gal bucket.

Steve