Hi all well firstly im new to w.f.p cleaning i have been using trad methods. I need some advice on my ro un it it seems to be producing a very small amount of water it is a 200 gallon membrain(2 x 100) and im lucky to get 60/70 liters a day! the fillters are all new, the water presure seems to be ok can fill a 5 liter bottle in about 8/9 secons, if i allow water to come out of the waste pipe it slows the rate down even more. im a bit stuck please help!! oh i bought the unit second hand im not that sure it should make any diff.