Quote:
Originally Posted by brulaz
Same here.
But for a permanent connection I hitched up the grey only. Then every 4-5 days hitched up and drained the black water and then switched it back to the grey. I figure it's better for the black water tank to have a good "whoosh" to get the solids out. But I've only done this at one site so ...
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I agree. You need to let the black tank build up to at least 2/3 full to generate enough flow to suck the solids out. I find that on a typical 2-day weekend, we will just about fill both our 15 gal black and 30 gal grey tanks (we tend not to use the public facilities if we can avoid it). I usually don't even take the sewer hose out until we are ready to close up. I connect to black first, empty the tank, then go inside, fill the tank at least half full, then empty again, then switch to grey, empty the grey tank, then drain the hose and pack it up.
If we are staying longer then two days, then I'll do the grey thing like you describe. If I know the black is getting full, I shut off the grey valve and let it build up, then do the black / grey empty procedure, leaving the grey valve open when I'm done. At take-down time, I shut the grey valve the night before, then do my standard close-up routine.
I have been using this procedure for some time, and never have odor issues in my trailer.