hello, this is probably a dumb question but i will ask anyway. I have started to use ro water with a coral life pure flow 24. my question is what quality is the water that comes out of the red tube . is this pure waste water or can it be used for anything else but tank water. It seeems that the water coming from the blue line is less of a stream than that of the red tube. the instructions do not really talk about the difference and it seems like a waste of 20- 30 gallons to produce a good 20 gallons. thanks in advance for any help.