[LWC]

can anyone help as their not answering their phone 

ive just come to look at my ro cause i havent had to use it for a couple of days and it hasnt produced hardly any water

its a 200gpd and ive got like 100 litres after 2 days 

i checked the pre filters, and noticed that ant the end of the thrid one there is hardly any pressure coming out. the pressure going in is good

i changed the pre filters couple of weeks ago and have been fine till now

should there be loads of presure coming out after the 3rd one? i seem to remember that there was at one point...grrrrrrrrr