Holding tank fluid.

seabeagle

New member
Where can I find a good deal for holding tank fluid? The other year I got some West Marine brand at 2 gallons for 20 bucks. Now it's 25 a gallon. I've also seen a couple of homemade solutions, are any of these with a try?


Holding tank fluid

Remedy 1

100 ml MYO disinfectant
1 cup Borax dissolved in hot water
1 cup Cloudy Ammonia
Add water to 2 litres
120 to 150 per toilet change

Remedy 2

1 litre of Pine of Clean
1 litre of Cloudy Ammomia
1 Cup of Borax
1 Litre of warm water

Mix Borax and water then add the rest

Remedy 3

Bottle cloudy Ammonia
Bottle Eucalyptus.
and Borax
Makes a few litres though

Remedy 4

Mix together 1/4 cup washing soda and 1/4 cup borax with a bit of water and add to the holding tank. (The ingredients are readily available from a supermarket). You can add some kind of perfume to the rinse tank if you want a fresh smell.  The liquid toilet cleaners that clip onto a plastic holder on the toilet rim, and "clean" when you flush can be utilised. Simply pierce the cap and squeeze a bit into the holding tank.

Remedy 5

Several caravan forums have had positive feedback on the following home made toilet chemical recipe:-

Woolworth’s home brand Nappy Treatment Plus is the favoured product or you could try Coles Napicare Plus. These products state they are phosphate free, biodegradable to Australian Standards 4351 and safe for septic tanks. The products contain sodium percarbonate (made up of hydrogen peroxide and sodium carbonate which acts as a sanitizer, deodoriser and descaler) and this breaks down to oxygen, water and sodium carbonate upon decomposition.

1 lid full ( or 2 tablespoons) of nappy treatment plus to ½ litre of warm water and stir until dissolved. Pour into bottom holding tank/toilet 20ltr cassette.

Most travellers use nothing in the top ‘flush’ tank but some add 1 tablespoon of the nappy treatment plus (dissolved) into the flush tank.

As with any chemical use caution.  Material Data Sheets indicate the ingredients can cause skin and eye irritation. Avoid inhaling the dust and medical treatment should be sought if swallowed.
 
How big is your "holding tank"? It's a Porta Pottie.!!Why use anything in the upper at all? Drop a packet in the lower half and your problems are solved for very little...

A non-problem IMHO... To many recipes for me to assimilate!!

Charlie
 
We have used a prooduct we buy at Walmart. It is called
Camperchem. It comes as a dry power and also as a liquid. Do not buy the one that is in the green box. The blue box stuff works best. You get about 10 bags for 7or 8 bucks.

Just put a little water in the bottom of the potty and add the bag of Camperchem. Use only fresh water in the top tank.
Hint-If you do not put TP in the pot it will dump very easy. Just put your TP in a baggie and throw out with the trash.
When we see a Jiffy John on the shore it becomes our potty dump.
 
We use and generic Pine Sol type cleaner poured straight into the lower tank and it seems to work very well. I read that recommendation a number of places and even if it stresses the seam over time, I will simply replace it. It does what I want and that is fight stink and lube the contents for easy/thorough pump outs.
 
100 ml MYO disinfectant
1 cup Borax dissolved in hot water
1 cup Cloudy Ammonia
Add water to 2 litres
120 to 150 per toilet change

I would be careful of using borax. Yes its soap but is will kill off a ( so Iam being told) a septic system. many pump outs are feed to a septic system. You dont want to go around doing that. as far as ammonia goes, pee is mostly ammonia so why add it it pee??? correct me if Iam wrong.
 
starcrafttom":1j0wo6su said:
100 ml MYO disinfectant
1 cup Borax dissolved in hot water
1 cup Cloudy Ammonia
Add water to 2 litres
120 to 150 per toilet change

I would be careful of using borax. Yes its soap but is will kill off a ( so Iam being told) a septic system. many pump outs are feed to a septic system. You dont want to go around doing that. as far as ammonia goes, pee is mostly ammonia so why add it it pee??? correct me if Iam wrong.

Good point, Tom!

The borax (Sodium Borate) is used because it limits bacteria growth in the toilet product. This helps control odors, but would interfere in a septic system, where you want the bacteria to thrive and digest the waste.

Pee is a mixture of water, salt, urea, and other eliminations by the kidneys. (Dr. Bob can elaborate on this, if necessary, being a specialist in kidney functions, also known as a nephrologist.)

The urea very easily turns into ammonia, as anyone with some day-old diapers can attest.

The use of ammonia in a toilet sanitizing compound probably has more to do with controlling the pH of the mixture to limit bacterial growth.

That's as much as I know that I can reasonably relate to you at this late hour, as I do not have a Ph. D. in Sanitary Engineering or a BS or MS in Civil Engineering degree. (Though some may disagree!)

Joe. :teeth :thup
 
Joe,

I would award you a Masters in Practical Engineering. To get a PHD you will have to destroyed a chemistry lab at least once.

While we are on the subject, what is the downside of using saltwater in a porta potti?
 
tpbrady":kecxsll9 said:
Joe,

I would award you a Masters in Practical Engineering. To get a PHD you will have to destroyed a chemistry lab at least once.

While we are on the subject, what is the downside of using saltwater in a porta potti?

Tom- Funny! I did a lot of crazy things in the classrooms and labs in 35 years as a high school science teacher, and more than once set off the fire alarms/smoke detectors.

The downside of using salt water is that it's already full of live little creatures of all kinds that can digest sewage and make a heck of a stink in doing so! Most additives work to stop bacterial digestion to avoid the problem.

Joe. :teeth :thup
 
tpbrady":2cxdv5zk said:
To get a PHD you will have to destroyed a chemistry lab at least once.

I've met Joe :roll: and I think he probably qualifies in that too! I know I tried to do it several times and failed... :mrgreen:

Don't know about salt water in the porta-potti. I would think that when you dump it, it probably will be near the source of some fresh water. Why use salt? Unless you don't want to carry it a long way full of flushing water...

Charlie
 
As anyone who has a marine head and holding tank can testify, it's not the stuff that humans put in there that stinks (assuming you do use some chemical), it is the decomposition of all the marine life in the salt water we use to flush. So salt water in a porta-potti is probably not the best solution.

For this reason alone I have installed an additional 14G fresh water tank for flushing with a "T" valve so I can use salt if I have to. It does make a difference.

M
 
I've used salt water quite often with the additive in the bottom tank. I know there is all kind of stuff in salt water that can grow but my porta potti hand pump didn't work, so we used a pitcher and salt water. After the last trip, I got tired of the hastle with the holding tank and macerator and decided to move technology back one step and go with a porta potti. My wife consented as she heard me keep grumbling about the complexity of the 25 versus the 22. I already removed the hot water heater. The first impression is the porta potti fits the space better is taller so easier to sit on and much simpler of course.
 
I suspect that your porta potti gets emptied a bit more frequently than a holding tank so salt water is probably fine. Also, holding tanks have long hoses which become semi permeable (at least to odors) with time and never seem to empty completely so fresh water really does make a difference.

Yup. it's a PITA to carry all that extra weight but it's better than the stink.

M
 
Well, I've tried my own fluid mix. A quarter cup borax and a quarter cup pine cleaner in the lower tank and dash more of pine cleaner in the upper tank. Works well for us. The tank is emptied about once a month. Items are dissolved well and odor is kept down. A giant jug of pine clean and a big box of borax cost me about $10. This should last me 2 years or more by my math. FYI is anyone wants to try. No guarantees if you use a pump out.
 
I thought that I had found the solution to the high cost of potti fluid by adding PineSol. Several months later the gasket on the dump gate in the potti failed by curling-would not close after it was opened. This was on an older potti-be sure to check that the gasket is compatible with the PineSol.
Pete
Pompano
 
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