Saltwater exchange system? - The Planted Tank Forum
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post #1 of 17 (permalink) Old 07-12-2011, 06:33 PM Thread Starter
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Saltwater exchange system?

I live right on the Gulf and have access to clean salt water. Has anyone considered or built a system that would constantly exchange seawater with their tank? I have always done freshwater tanks but having the proximity to build a system that would pull water constantly intrigues me. The local bait shops do it, why can't I?

Crazy idea?
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post #2 of 17 (permalink) Old 07-12-2011, 06:42 PM Thread Starter
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At least when water temps are appropriate, in winter I would have to close the system I suppose.
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post #3 of 17 (permalink) Old 07-12-2011, 06:58 PM
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There are a few public aquariums that do this. All that I know of pretreat the water however.
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post #4 of 17 (permalink) Old 07-12-2011, 11:16 PM
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I've thought of this. I'm 18 and live in Michigan but I hope to live on the ocean someday and do that. Just have a 2 pumps or maybe even 1 with 1 line in and maybe an overflow or another pump going out. You wouldn't need to add any liquid supplements or anything. Temperature wouldn't matter of the gulf I don't think because in the wild, temp fluctuates. If you do this, I think your best bet would be to do a sort of Gulf biotope so the temp changes would be ok. Just my 2 cents
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post #5 of 17 (permalink) Old 07-13-2011, 03:28 AM
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I would run it through a powerful UV and maybe purigen. How fast would the flow in be? If it's more of a drip system you wouldn't have to worry about the temperature of the water coming in. If the tank is of any decent size the heaters should take care of it.
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post #6 of 17 (permalink) Old 07-14-2011, 06:18 PM
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Maybe carbon too depending on how clear the water is where you are.
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post #7 of 17 (permalink) Old 07-14-2011, 08:09 PM
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how you gonna clean the oil residue out?
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post #8 of 17 (permalink) Old 07-14-2011, 08:38 PM
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Quote:
Originally Posted by scapegoat View Post
how you gonna clean the oil residue out?
Aha
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post #9 of 17 (permalink) Old 07-15-2011, 12:23 AM
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Quote:
Originally Posted by justincgdick View Post
Aha
aha or haha?

its a serious question, they're still finding it out there...
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post #10 of 17 (permalink) Old 07-15-2011, 12:34 AM
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Quote:
Originally Posted by scapegoat View Post
aha or haha?

its a serious question, they're still finding it out there...
Well, aha... but I meant it like "haha". I didn't realize you were serious, I just found the comment kinda funny. It's not supposed to be offensive or anything. Just the way you said it seemed like you were poking fun.

It's sad it happened. And its sad that it might be a valid concern.
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post #11 of 17 (permalink) Old 07-15-2011, 12:58 AM
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I remember watching a documentary on one of the aquariums that uses natural seawater. Every few months they have to shoot a "pig" through the intake pipes to clear all the encrusted sealife that starts to grow in there before it gets completely clogged.
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post #12 of 17 (permalink) Old 07-15-2011, 12:39 PM Thread Starter
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Good one, but the only oil we have left here are a few continuing tarballs on the beaches.

I figured keeping plumbing free of sea life would be a constant battle. Maybe a drip system is the way to go.
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post #13 of 17 (permalink) Old 07-15-2011, 01:32 PM
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http://www.bbc.co.uk/news/science-environment-12520630

http://www.aolnews.com/2011/04/08/oi...ulf-of-mexico/

it's still a problem. I also wouldnt want a single drop of oil or tarball getting into the tank even if thats "all" the issue was.

That being said, it would be neat to be able to do something like that.
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post #14 of 17 (permalink) Old 07-21-2011, 02:25 AM
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I would much, much prefer to do this in batches.

I personally would not make a constant flowing system. I've lived right on the coast for years (Charleston SC) and the water conditions fluctuate quite a bit.


If you get a heavy rain, even the water right there in the surf, on the beach, can drop salinity at alarming levels. Native life isn't concerned, they're used to it.


Personally if I had the cash to plumb something like this, I'd pass it all through a micron filter, a big UV, and maybe a carbon filter..... into a container that held 1-2X my total system volume.

Once it's checked for salinity and proper levels of other critical issues (eps. phosphates, nitrates, and alkalinity) then I'd use it for larger water changes, maybe 10% a day.


I know on the Carolina coast, we have a HUGE amount of phosphorus. This would prevent me from using local sea water. Just too expensive to clean it up.
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post #15 of 17 (permalink) Old 07-21-2011, 03:37 AM
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It's also fairly likely that this would not be legal to do without some sort of permit process.
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