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Old 11-19-2020, 07:39 AM   #15
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The use of phosphate-containing tank cleaners is contributing to the algae production in the fresh water lakes of our country. It is just not necessary. My 16 year old MH has never had any tank chemicals added to them.
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Old 11-19-2020, 08:43 AM   #16
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Here is a link to a boating forum with info on black tanks. See post #3 which includes a link to an excellent write up of cleaning chemicals and proedures.
I have switched to sodium percarbonate aboard my boat and use it occasionally in MH black tank.

https://www.trawlerforum.com/forums/...ad.php?t=54235
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Old 11-19-2020, 09:05 AM   #17
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I live in Texas.

Because of the heat, there's no telling what's growing in there. This motorhome set for 12 years before I bought it, it's a 2000 model. I've owned it 2 years and we try use it every month. I'm giving this a try.
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Old 11-19-2020, 09:26 AM   #18
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If I am traveling after a dump station flush I put a few gallons of fresh water and 1/2 cup or a little more of 20 Mule Team borax. After a good sloshing around all is well.
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Old 11-19-2020, 09:45 AM   #19
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Wow we must be idiots as we just fill it up and dump. No adding chemicals that can ruin someones septic system. No wasting of excess water.

Been doing it the same for 30 years. 2 motorhomes, 2 5th wheels and a trailer.


One 5th did have a poorly designed pipe system that plugged up till I fixed it.
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Old 11-21-2020, 01:29 AM   #20
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Is great cleaner, when NOT put in waste water; e.g. was removed from laundry soaps because the waste promoted algae growth in lakes/ streams?
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Old 11-21-2020, 06:37 AM   #21
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Quote:
Originally Posted by Winemaker2 View Post
Here is a link to a boating forum with info on black tanks. See post #3 which includes a link to an excellent write up of cleaning chemicals and proedures.
I have switched to sodium percarbonate aboard my boat and use it occasionally in MH black tank.

https://www.trawlerforum.com/forums/...ad.php?t=54235
Too late to edit but for those naysayers the SPC mentioned above us not only not harmful for waste treatment systems it is actually used in many systems to aid breakdown.
It breaks down producing hydrogen peroxide which gives off O2 and leaves water.
I do not use it regularly but do as a periodic... especially end of season... extra cleaning to reduce any build in tanks or sensors.
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Old 11-21-2020, 02:27 PM   #22
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Wow we must be idiots as we just fill it up and dump. No adding chemicals that can ruin someones septic system. No wasting of excess water.

Been doing it the same for 30 years. 2 motorhomes, 2 5th wheels and a trailer.


One 5th did have a poorly designed pipe system that plugged up till I fixed it.
Raising my hand,, Idiot here! Except that I got about 40 years under my belt.

Black tank questions come up quite a bit on here, and even though I know there will never be a changing of someone's mind, it's always an amusing topic to partake in.
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Old 11-21-2020, 06:35 PM   #23
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Tide has TSP in the ingredients.
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Old 11-22-2020, 10:00 PM   #24
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I buy the actual TSP at paint stores like Sherwin Williams. Home retailers all have the fake stuff. Used to add Calgon to the black tank as a water softener/surfactant, switched to TSP as it works better, is cheaper, and does less environmental damage.
Does the label state TSP-PF? PF means phosphate-free. I know of no state that has not banned phosphate use.
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Old Yesterday, 12:24 AM   #25
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Suspicion is it was banned in MFR somewhere in the FED CLEAN WATER ACT, when they took TSP out of SPIC-N-SPAN, and out of laundry soaps? TSP still aloowed as paint prep, esp. because it can wash without requiring a rinse before painting.
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Old Yesterday, 12:42 AM   #26
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Does the label state TSP-PF? PF means phosphate-free. I know of no state that has not banned phosphate use.
It was a very selective ban, to dubious result, for political reasons. Pure consumer products - defined as "what would Home Depot sell?" - and dishwashing and laundry detergents - were all de-phosphated. But "pro" products were excluded from the ban, because they needed to still work.

So I go to paint stores that sell to painters and buy the cleaner. Nothing else works as well for pre-paint cleaning. Or dishwashers. Or clothes washers. Or . . .
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Old Yesterday, 05:08 PM   #27
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OK, thanks Terry and Bob for the education.
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