Daplatapus's upgrade

[daplatapus]

Originally Posted by asylumdown

Do the lengths of pipe/head pressure in your inlet outlet lines need to be the same for it to always pump the exact same amount of water in and out, or are peristaltic pumps not as affected by that?

My understanding is that it doesn't matter. Because of the roller running over the tube, it actually meters out a set volume each rotation regardless of the length of the intake or discharge. There is a bit of debate on RC about which model/manufacturer does this to the greatest accuracy, but I figure if I check my tank salinity every month when I re-fill my water change can, I can adjust anything if I need to.

They do sell a huge variety of these pumps, from I think 4 gal per day upwards. I bought the 100 gpd so I can do large water changes if I need to.