Gray tanks fill too fast...

[Chuck 1935]

What if you were to install a one way valve on the outlet of the grey tank so that you could connect your grey and black tank together to maximize your waste water holding capacity. If it were valved properly you would not have a mess when hooking up[ to dump.

[jollyjim]

I don't know why RV's seem to have black tanks that are so big and gray tanks that aren't big enough. I have read where several people have installed pumps between the gray tank that dumps into the vent pipe of the black tank. You can then control how much you take from the gray and deliver into the black without having to worry about backflush.

[azloafer]

jollyjim and Chuck 1935, Those are both interesting ideas. My coach is at the shop for some work, but I'm anxious to get it back and go on some weekenders to try different things out. There is a different RV forum where this subject has gone on for many pages. In that forum people were saying how they all have this problem and what they do about it. Some people use things like waterless shampoo and baby wipes instead of a shower. A couple people use gray water caps with small holes that drip...drip...drip. When I read that site I realized that I am a water waster. BUT I also realized that using a dishpan and then dumping it into the toilet is a common practice. I'm not so nuts after all. I showed one post to DW that said she is to wash her hair at the outside water bay! Anyway...we are not alone.

[Jeeperrmartin]

We have been in AZ since Dec 29th. We have only dumped 3 times. There has been some real good suggestions on saving water. We dry camp, so we don't have any hook ups.

We have camped camped with others, that dump 2 times a week.

We do equalize our grey tanks. I would think when the greys got full, you could equalize into the black. I have never had to do that though.

[teekay]

I carry 5 gal bucket from Home Depot. I drain some of the gray water into the bucket, run it up to bathroom and dump it down the toilet. When we're dry camping the dish water also gets dumped down the toilet. Last year we went 4 days, full showers and meals for 3 adults with no problems while we were at the EAA Oshkosh airshow.

[Ding-a-ling]

Hey azloafer,

You've gotten a lot of good hints so far, .... here's another idea.

On most coaches the capacity of the fresh water tank is just about what the grey and black tanks hold. In certain situations we fill the fresh water tank and use that supply, not the CG water connection. If you do this and use your Maximizer you'll not have more in the grey/black tanks than what you came with.

FJF

[John Mo]

Not sure about your layout and where all of your plumbing is, but you might be able to rig a transfer pump similar to what this guy has done:
http://home.roadrunner.com/~rlshields/tpump.htm

[azloafer]

Originally Posted by John Mo

Not sure about your layout and where all of your plumbing is, but you might be able to rig a transfer pump similar to what this guy has done:
New Page 1

I'll have to check my plumbing and electrical and see if that is a reasonable option. I am not much of a handyman any more (3 back surgeries and a fusion) but I'll take a look. If this fella lived in Arizona I'd hire him. Thanks for the link. Joe