Beware of Vinegar - The Pump Killer
- Thread starter redfishbluefish
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Be careful with Reef Octopus pumps and muriatic acid. Soaked my bubble blaster in a strong muriatic water mix and the white coating on the impeller started to dissolve and melt off. It might have been pure acid but I don't recall.
I'd never heard this and I've been using vinegar for ages.
Good to know, thanks! I've just ordered 1kg of citric acid ;Happy...
Good to know, thanks! I've just ordered 1kg of citric acid ;Happy...
vetteguy53081
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Ive seen this too often, yet manufacturers such as Ecotech and Nepture recommemnd Vinegar baths . . .????
I wonder why ecotech recommends vinegar for cleaning then?
argi
Community Member
My guess here is a CYA policy and for the safety of the consumer. Recommending a strong acid for cleaning could open lawsuits for the consumer who doesn't follow directions and burns themselves, gets injured from a splash in the eye or ruined clothing. But I could be wrong.
I've been using muriatic acid for years, one of the best to cut right through calcium deposits.
jgaepi
Active Member
Love me some Talenti ...I have posted bits and piece of my vinegar story over the past three years, and I thought it would be beneficial if one post contained all that I've learn. You'll be surprised! This story will contain three parts; my history with vinegar, the cause and simplified chemistry what's happening; and the solution to cleaning your pumps without fear of swelling magnets.
MY STORY
I've been using MP's for many years, and as a good boy, cleaned the wetsides in vinegar (aka, acetic acid) to make them look good and function correctly. I had a very simple way of doing this by immersing the entire wetside in straight vinegar over night and then rinsing and putting back into service.
If anyone is interested, this small plastic container that perfectly fits an MP40 wetside is a one pint talenti ice cream (gelato) container....an overpriced ice cream my wife enjoys....too many times!
About three and a half years ago I found one of my MP40 wetsides slowly spinning. To be crystal clear, the entire wetside...cage and all, was spinning. When I pulled it out I found the magnet had swelled and was binding to the body of the powerhead, causing the entire thing to spin.
I wasn't a happy camper, but over the next couple months, two more were found with swollen magnets (plastic case either swollen and/or cracked), and now also not functioning.
Now this isn't just an MP thing. In retrospect, I had four Koralia Evolution powerheads before switching over to MP's. All four were dead in the water within a year of purchasing new. Two with obvious swollen magnetic portions of the impeller shaft, and two that I couldn't even get the impellers out of the body of the powerhead because they were swollen and stuck within the body. Note that these powerheads were also regularly cleaned in vinegar.
So I have a confession...."Bless me Father for I have sinned"....my wife didn't know what I paid for all the MP's I have...and now I need to go out and drop another $225 for three wetsides. I wasn't happy!!! Note, if I die, my wife will be selling MP40's for about $20 - $25, half of what I supposedly paid.
To finish this story, I later had three MP10's do the same thing. My wife will be selling these for $15 - $20 a piece. Now I know, with six MP's with new wetsides, you're all waiting for me to die!
WHY IMPLICATE VINEGAR
So I was puzzled why my overpriced MP's crapped out, and about six months after loosing my first MP, I came across a post by @Randy Holmes-Farley in which he posted:
"I think the effect on plastic may be worse with vinegar than muriatic acid but it may depend on the plastic.
Vinegar can be in the form of acetic acid and that neutral molecule can enter plastic. Diluted muriatic acid won't have any neutral acidic molecules in it to enter plastic, so just exposes the outermost leading edge of plastic. So while the muriatic acid after dilution is a much stronger acid, i would not assume it is worse on plastics."
This made perfect sense! To clarify, charged molecules won't penetrate plastic, but neutral small molecules will. I will repeat that saying it differently....ionic molecules will react at the surface while small neutral molecules will potentially penetrate that material.
If we look at acids in aqueous solution, they dissociate into ions, which is commonly shown as:
HA(aq) + H2O(l) ⇌ H3O+(aq) + A−(aq)
where HA is the acid. Note that the left side is "neutral" while the right side of the reaction contains "charged" molecules (ions). Specifically, for acetic acid (vinegar), this dissocation looks like this:
CH3COOH + H20 ⇌ H3O+ + CH3COO-
Now here's the kicker....some acids dissociate easily and readily while others dissociate very poorly. In the case of acetic acid, it dissociates very poorly, with the majority still in the neutral CH3COOH configuration. To repeat what I said above, charged ions do not penetrate, while small neutral molecules can.
So what is happening when you clean your parts in vinegar, is that it being neutral, has the abililty to penetrate the plastic and, if within the plastic is metal, cause it to oxidize (rust), and swell. Now this doesn't happen over night, or by one cleaning, but happens over time....months, maybe years, but it will happen. In addition, the type of plastic could impact how quickly (or slowly) the acid penetrates.
Don't get me wrong, vinegar is still great for cleaning tanks and pure plastic parts, but I'd avoid it with metal parts encased in plastic (impellers and pumps.) If the cages alone need to be cleaned of coraline, I'd still consider cages only to be soaked in vinegar. But plastic encased magnets...NO, NO, NO!
IF I CAN'T USE VINEGAR, WHAT AM I TO DO
So what can you use to clean your powerheads and pumps that won't potentially cause the magnets to rust and swell and ruin your pumps? We need to find acids that dissociate completely and/or are too large to penetrate the plastic.
Well there just happens to be two readily available acids available that are reasonably price, and in my opinion, with one, clean better (faster) than vinegar. These two acids are Muriatic Acid and Citric Acid.
Muriatic acid (dilute hydrochloric acid) is available at HD and pool stores (and I'm sure other places as well.) One note with muriatic acid, it is hydrochloric acid and needs to be handled with care. It will burn you, cause for holes in your cloths, and is dangerous. So wear rubber gloves, eye protection and be careful.
For cleaning tank parts, I'd recommend dilution 1 to 10. Even at this dilution, it will clean pumps and whatever, much faster than vinegar. You'll actually see the calcification fizz off the equipment.
The other acid that is pump safe is citric acid. You can find five pounds on ebay for a reasonable amount of money....a life time supply. Here you want to dilute about 1 cup to a gallon of water. Throw your pumps into this solution and allow to sit over night and you should find a cleaned pump
CONCLUSION
Vinegar, being a neutral acid, will penetrate plastics. If metal is encased in this plastic, it will find it's way and cause that metal to rust and swell. To avoid this, use other acids, such as muriatic acid or citratic acid to clean your pumps...and have them last forever!
ludnix
Valuable Member
Thanks for the great write up and information @redfishbluefish ! You're gonna be on my radar when I check the obits and estate sales now!
TexasReefer82
Active Member
Very intersting!!! Thanks for posting.
Does anyone have any knowledge about whether products like RydLyme are safe for these plastic parts? It's a biodegradable descaler that is also food safe and non corrosive to metals. It's even safe to get on your hands even though the active ingredient is HCl. It lasts for a long time before being exhausted.
Amazon product
Does anyone have any knowledge about whether products like RydLyme are safe for these plastic parts? It's a biodegradable descaler that is also food safe and non corrosive to metals. It's even safe to get on your hands even though the active ingredient is HCl. It lasts for a long time before being exhausted.
Amazon product
I own Tunze pumps that have been regularly soaked in vinegar in the past 10 years or so without any issue. Same with my return pump. Seems to be related to the type of plastic and possibly the fillers used in them (often calcium carbonate).
BGrand
Only dead fish swim with the stream.
Thank you very much for this.I have posted bits and piece of my vinegar story over the past three years, and I thought it would be beneficial if one post contained all that I've learn. You'll be surprised! This story will contain three parts; my history with vinegar, the cause and simplified chemistry what's happening; and the solution to cleaning your pumps without fear of swelling magnets.
MY STORY
I've been using MP's for many years, and as a good boy, cleaned the wetsides in vinegar (aka, acetic acid) to make them look good and function correctly. I had a very simple way of doing this by immersing the entire wetside in straight vinegar over night and then rinsing and putting back into service.
If anyone is interested, this small plastic container that perfectly fits an MP40 wetside is a one pint talenti ice cream (gelato) container....an overpriced ice cream my wife enjoys....too many times!
About three and a half years ago I found one of my MP40 wetsides slowly spinning. To be crystal clear, the entire wetside...cage and all, was spinning. When I pulled it out I found the magnet had swelled and was binding to the body of the powerhead, causing the entire thing to spin.
I wasn't a happy camper, but over the next couple months, two more were found with swollen magnets (plastic case either swollen and/or cracked), and now also not functioning.
Now this isn't just an MP thing. In retrospect, I had four Koralia Evolution powerheads before switching over to MP's. All four were dead in the water within a year of purchasing new. Two with obvious swollen magnetic portions of the impeller shaft, and two that I couldn't even get the impellers out of the body of the powerhead because they were swollen and stuck within the body. Note that these powerheads were also regularly cleaned in vinegar.
So I have a confession...."Bless me Father for I have sinned"....my wife didn't know what I paid for all the MP's I have...and now I need to go out and drop another $225 for three wetsides. I wasn't happy!!! Note, if I die, my wife will be selling MP40's for about $20 - $25, half of what I supposedly paid.
To finish this story, I later had three MP10's do the same thing. My wife will be selling these for $15 - $20 a piece. Now I know, with six MP's with new wetsides, you're all waiting for me to die!
WHY IMPLICATE VINEGAR
So I was puzzled why my overpriced MP's crapped out, and about six months after loosing my first MP, I came across a post by @Randy Holmes-Farley in which he posted:
"I think the effect on plastic may be worse with vinegar than muriatic acid but it may depend on the plastic.
Vinegar can be in the form of acetic acid and that neutral molecule can enter plastic. Diluted muriatic acid won't have any neutral acidic molecules in it to enter plastic, so just exposes the outermost leading edge of plastic. So while the muriatic acid after dilution is a much stronger acid, i would not assume it is worse on plastics."
This made perfect sense! To clarify, charged molecules won't penetrate plastic, but neutral small molecules will. I will repeat that saying it differently....ionic molecules will react at the surface while small neutral molecules will potentially penetrate that material.
If we look at acids in aqueous solution, they dissociate into ions, which is commonly shown as:
HA(aq) + H2O(l) ⇌ H3O+(aq) + A−(aq)
where HA is the acid. Note that the left side is "neutral" while the right side of the reaction contains "charged" molecules (ions). Specifically, for acetic acid (vinegar), this dissocation looks like this:
CH3COOH + H20 ⇌ H3O+ + CH3COO-
Now here's the kicker....some acids dissociate easily and readily while others dissociate very poorly. In the case of acetic acid, it dissociates very poorly, with the majority still in the neutral CH3COOH configuration. To repeat what I said above, charged ions do not penetrate, while small neutral molecules can.
So what is happening when you clean your parts in vinegar, is that it being neutral, has the abililty to penetrate the plastic and, if within the plastic is metal, cause it to oxidize (rust), and swell. Now this doesn't happen over night, or by one cleaning, but happens over time....months, maybe years, but it will happen. In addition, the type of plastic could impact how quickly (or slowly) the acid penetrates.
Don't get me wrong, vinegar is still great for cleaning tanks and pure plastic parts, but I'd avoid it with metal parts encased in plastic (impellers and pumps.) If the cages alone need to be cleaned of coraline, I'd still consider cages only to be soaked in vinegar. But plastic encased magnets...NO, NO, NO!
IF I CAN'T USE VINEGAR, WHAT AM I TO DO
So what can you use to clean your powerheads and pumps that won't potentially cause the magnets to rust and swell and ruin your pumps? We need to find acids that dissociate completely and/or are too large to penetrate the plastic.
Well there just happens to be two readily available acids available that are reasonably price, and in my opinion, with one, clean better (faster) than vinegar. These two acids are Muriatic Acid and Citric Acid.
Muriatic acid (dilute hydrochloric acid) is available at HD and pool stores (and I'm sure other places as well.) One note with muriatic acid, it is hydrochloric acid and needs to be handled with care. It will burn you, cause for holes in your cloths, and is dangerous. So wear rubber gloves, eye protection and be careful.
For cleaning tank parts, I'd recommend dilution 1 to 10. Even at this dilution, it will clean pumps and whatever, much faster than vinegar. You'll actually see the calcification fizz off the equipment.
The other acid that is pump safe is citric acid. You can find five pounds on ebay for a reasonable amount of money....a life time supply. Here you want to dilute about 1 cup to a gallon of water. Throw your pumps into this solution and allow to sit over night and you should find a cleaned pump
CONCLUSION
Vinegar, being a neutral acid, will penetrate plastics. If metal is encased in this plastic, it will find it's way and cause that metal to rust and swell. To avoid this, use other acids, such as muriatic acid or citratic acid to clean your pumps...and have them last forever!
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redfishbluefish
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I have to agree, that the type of plastic could impact the rate that acetic acid penetrates. Maybe some pumps could be cleaned in vinegar and never have an issue. All I know is that Vortech's (and most likely Koralia's), appear to allow acetic acid to get through their plastic covering.
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redfishbluefish
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I have no idea??? I find it hard to believe that this product contains 10% hydrochloric acid, and doesn't burn the skin.
Cost wise, you're better off with muriatic acid at roughly $10 gallon (at approximately 15-30% HCl) or citric acid at roughly $15 for five pounds.
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redfishbluefish
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You and my wife!
Take note how that MP40 wetside perfectly fits into that one pint container....like it was made for it.
vetteguy53081
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I myself ALWAYS Dilute the mixture
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