input on wash xle 4040

[Four D Acre Farms]

Hey Guys and Gals I have been asked by the maple haus in Ludington mi to post this question for him. What are the DIYs using to wash your xle 4040 membranes on you DIY ros? He is not a member therefore cant post himself but he does read the posts. He knows of some guys using red devil lye soap? Lets hear your input thanks

[Bricklayer]

I bought a 2 pound bag of food grade citric acid for acid wash for $8, and a tub of RO soap solution from CDL for $10

[Urban Sugarmaker]

I use Red Devil lye and make my wash water 11-12 pH. After washing I run some permeate back through the membrane to the wash tank, then neutralize with sodium bicarbonate (baking soda).

I have citric acid but I have not done an acid wash yet. You can get these supplies at DudaDiesel.com.