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post #11 of 16 Old 03-28-2014
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Re: Muriatic Acid in holding tank

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Originally Posted by Samuelmonosov View Post
(snippage)There are several natural septic system cleaners which use natural enzymes to break down the crud. You can get them cheap at Home Depot.
While the enzymatic products may help with sludge, they will do nothing for the crystallized uratic salt buildup. The problem is well known in the plumbing industry, especially in commercial buildings, and has been around forever, but exasperated by the introduction of ultra-low water consumption fixtures, not to mention water-free urianls. Naturally, the chemical industry started marketing Uratic Salt Removers at least 25 years ago. All of the products marketed for this problem STILL use HCl as the active ingredient.
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post #12 of 16 Old 03-28-2014
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Re: Muriatic Acid in holding tank

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While the enzymatic products may help with sludge, they will do nothing for the crystallized uratic salt buildup. The problem is well known in the plumbing industry, especially in commercial buildings, and has been around forever, but exasperated by the introduction of ultra-low water consumption fixtures, not to mention water-free urianls. Naturally, the chemical industry started marketing Uratic Salt Removers at least 25 years ago. All of the products marketed for this problem STILL use HCl as the active ingredient.
BINGO ! Thank you

Those of us with hard water and septic systems deal with these issues all the time. Enzyme's don't do squat. I pour acid down my drains to "clean out" the pipes about twice a year. You learn after you replace ALL your plumbing.
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post #13 of 16 Old 03-28-2014
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Re: Muriatic Acid in holding tank

Back in the old days when I ran sewage systems for the US navy we used citric acid to remove the scale in the urinal piping on the ships worked good and is and was non caustic to rubber and the various metals in the system also it is not harmful to people or the environment heck you could eat it if you really want to but I would not recommend that.

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post #14 of 16 Old 03-29-2014
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Re: Muriatic Acid in holding tank

I personally don't feel vinegar does anything unless you started using when the system was new and you used it very regularly. It is just too weak.

An acid is an acid, but I feel it is better to use ones more designed just for home scale removal use like CLR

Using acid is just for the hoses etc. it isn't going to clean the holding tank. The amount you would have to add to maintain a pH lower enough to remove scale in a holding tank that has sludge in it would be a lot.

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post #15 of 16 Old 03-29-2014
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Re: Muriatic Acid in holding tank

I've done a fair amount of testing of de-scaling chemicals, both for industrial and sailing head applications, and the most widely available chemical that I liked was CLR.

Hydrochloric acid. Effective. Murder on most metals, and not good for stainless. Requires care, Will destroy nitrile (cracks) and nylon (melts--not just ropes but fittings too). I wouldn't use it unless I was 100% certain there were no nitrile or nitrile parts in the system... and both are common in certain brands.

Lime-a-way. Sulfamic acid. Bad on nitrile (heads other than Jabsco, hoses) and acetal (strainers).

CLR. Lactic acid. Probably the best chemical compatibility and pretty aggressive as well. There is risk to Hytrel and ABS, but I've not seen those in heads.

Vinegar. Weak acetic acid. From what I've seen, this is mostly in your head. Certainly it won't attack established layers. Probably works for folks that flush enough water and use it very regularly... and even then CLR would be more effective and economical, if the does were equivalent. But folks do like their home remedies. They'd be better off using the vinegar and veggy oil on salads.

---

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post #16 of 16 Old 03-29-2014
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Re: Muriatic Acid in holding tank

We use a product from tract ecological called Sew Clean check it out Welcome to Trac-Online


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