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degibson84
05/19/2014, 06:57 PM
So I got a 65 gallon water holding tank off a local reefer which I intend to use as an ato tank so I don't have to keep filling my 5 gallon bucket everyday. After getting it home and taking the top off I'm thinking this wasn't being used for his ato. There is a large pump inside the tank and it was coated in a crystallized sand. Most of it rinsed off and I dumped it out but there is some on the bottom that would not come off even after scraping it.

Will this affect the ro/di I plan to keep in here to use this container as a top off

ary
05/19/2014, 07:03 PM
Are you going to be using a top-off unit?

The only potential problem I can see is sucking up that residual sand and affecting your protein skimmer, depending on where it is of course.

As for it affecting the quality of the ro/di water I think that will be a non issue.

Best of luck

disc1
05/19/2014, 07:08 PM
Was he using kalk? Could it be the crud that always builds up when one doses kalk through the ato?

degibson84
05/19/2014, 07:09 PM
Yes I'm using a dual float switch currently for top off. May have to get a larger pump to get it out of a 65 gallon container. I don't think it will suck anything out as it is solidified to the bottom.

I'm more worried about the water getting tainted by the sand

degibson84
05/19/2014, 07:12 PM
Was he using kalk? Could it be the crud that always builds up when one doses kalk through the ato?

I was thinking that but he also had a calcium reactor. Would one need to run both?

disc1
05/19/2014, 07:21 PM
Sometimes people have both. I'd want to know what it was before I used the barrel, but if I had to bet that's what I'd bet.

degibson84
05/19/2014, 07:24 PM
When i get home tomorrow I will take a picture of the pump that still has the substance on it.

To me it looked like a sand when I blasted it with high pressure most of it came off but there was just some spots on the bottom of the barrel. The stuff in the barrel was more of a white color than the stuff on the pump.

Randy Holmes-Farley
05/20/2014, 05:18 AM
I'd just soak it in vinegar or diluted muriatic acid. :)

leveldrummer
05/20/2014, 06:41 AM
Im betting its kalk or even precipitation, get a gallon of vinegar, lay the tank on the side, and fill up just the side panel, let it sit a few hours and scrub it. then do the next side, then the bottom. no need to fill the entire tank up with water, just do a side at a time.

degibson84
05/20/2014, 01:47 PM
It's only in the very bottom

tmz
05/20/2014, 01:57 PM
Either cover it in vinegar and soak for a few hours or wet a towel with vinegar an let it sit on it for afew hours. Most of it should rinse off after that or scrape up easily.

madadi
05/20/2014, 02:03 PM
he was either using kalk in his top off OR he was using it for saltwater holding tank for water changes. Either way, rinse it with some vinegar. give it a few rinses and you are good to go.

degibson84
05/21/2014, 02:59 PM
Here is the pump

http://i811.photobucket.com/albums/zz32/CLEsportscards/FB02428C-E814-4CB9-AAE4-EE69653A985A_zpsxylvpuiq.jpg (http://s811.photobucket.com/user/CLEsportscards/media/FB02428C-E814-4CB9-AAE4-EE69653A985A_zpsxylvpuiq.jpg.html)

Couldn't really get a good pic inside the container but you can see te yellowish on the bottom

http://i811.photobucket.com/albums/zz32/CLEsportscards/0D008F3A-423F-4A39-B226-D9FC30B39BC3_zpsvx7iql6b.jpg (http://s811.photobucket.com/user/CLEsportscards/media/0D008F3A-423F-4A39-B226-D9FC30B39BC3_zpsvx7iql6b.jpg.html)

disc1
05/21/2014, 04:22 PM
Yeah, that looks like "kalk crud". Not really harmful at all to the water quality, but it will lock that pump up for sure. Vinegar will soften it up so you can clean it out. Muriatic acid will do it faster if you aren't scared to work with it. Please mind your safety if you work with muriatic.

degibson84
05/21/2014, 04:26 PM
I'm not sure if that pump even works. Honestly didn't know it was In There lol

Bilk
05/22/2014, 11:04 AM
Looks like it was used for a mixing station. Crud is from salt mix is my bet.

degibson84
05/23/2014, 04:24 PM
Yeah, that looks like "kalk crud". Not really harmful at all to the water quality, but it will lock that pump up for sure. Vinegar will soften it up so you can clean it out. Muriatic acid will do it faster if you aren't scared to work with it. Please mind your safety if you work with muriatic.

Mutator acid is baby stuff compared to the hydro floric acid I used to work with at my old job.