Gray/Grey/Galley Tank Grey Tank Sanitation Toilet

Two grey tanks?

Q: It appears I have three tanks, a black and two grey tanks? What goes into each one?

A: Normally 3 tanks, a black tank, and 2 grey tanks(with one known as galley tank), that being said, black is toilet and two grey tanks are for kitchen sink, bathroom sink, bathroom shower/tub, dishwasher and washing machine(last two you might not have), then it is split with one being kitchen sink(galley tank) and the bathroom sink/bathtub/shower). At least all of the RVs I am seeing on a daily basis, those are the common setups.

Freshwater Tank Shower Toilet Water Water Systems

Water Pressure Regulator

Q: Do I really need a water pressure regulator?

A: Water lines in RVs should have no more than 60-65 psi. That is a very comfortable pressure for faucets and showers in your RV, could it handle more, probably but do you want to risk it? Here is the water pressure regulator I use (which is currently unavailable on Amazon a/o 1/8/2020. But any of the ones that can regulate it and have a dial to see what the water pressure is fine. The ones I don’t like are the ones w/o a gauge.

Black Tank Sanitation Toilet


Q: Can you use Rid X in your RV toilets to break down toilet paper?

A: RIDX RV Toilet Treatment is safe for RVs, portable toilets, and portable marine toilets. 

Black Tank Sanitation Toilet

Toilet Paper

Q: What kind of toilet paper should I use? Can I use same stuff as at home?

A: It should be septic safe toilet paper.

A: Fill a small Tupperware container with some water. Take a piece of the TP and add it in. Put the lid on and shake for a few seconds. If it dissolves than you are good to go.