I got a question. this red hose popped out and I took off the nut and put it back together with that little clear plug for the inside of the hose. My question what could cause this ? here is a couple pics. i have new filters from you I got. just haven't put them in yet... meter and tds is 1ppm. but has been 1 year liking a few days. only have a 4o breeder and 20L sump.