Add a capful (20 mls) of BioMagic down the drain each day or two depending on how much water you are using and it will keep it odourfree and will also digest any waste scraps etc that have found their way down there. Do not add bleach or disinfectant type products to this tank. It is a fact that grey water tanks develop more bacteria and faster than a black waste tank so please be aware when and where you dump it. Make sure that no kids , animals etc will be playing in that area. To clean a grey water hose and keep it odourfree just plug the outer end and add 50 ml of BioMagic and fill with water from the sink. Let it sit for 1-2 hours if you can and then empty it . If it has a lot of Fat, oil & grease then you might need to do it twice at first and then on a regular basis to make it cleaner and better to travel with.
BioMagic Regular or heavyduty will do this well.
Yes Nu-Klean is specifically made to use on all modern surfaces like Duco, plastics, poly, fibreglass, canvas and vinyl. Use the suggested dilution on the product bottle and if unsure start with a weaker solution. It will not bleach or fade colours and leaves no residue.
Yes For light soiling if you dilute it 30:1 and spray the mark then gently work it in or leave it to soak for a couple of minutes then sponge out with fresh water. Repeat if necessary or use a stronger version if it is not dealing with the mark. There is no bleach in this product so it does not rermove colours but I would always test the fabric in an area which is not easily seen.