Help me build a closed system

Started by Ron, March 30, 2012, 01:47:23 PM

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Ron

I want to build a small closed system at my house.   Figuring on 20-30 crabs at any given time.   Looking for advise or tips on setting it up and setting up a basic filtration system.   Not trying to get too fancy or expensive.

First question is, can I use these as the holding tanks.    Why or why not?

http://www.grainger.com/Grainger/RUBBERMAID-Stock-Tank-1MDC1?Pid=search
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rdbeard

That's what jack uses now, he should be able to give some info although he's doing an open system. my first set up was a 30 gallon aquirium and it worked good for up to maybe 20 crabs and all i used was a regular aq. pump- filter and a few more air stones.

ChrisS

Not sure why you couldnt. I use 2 of them for a filter.
in·teg·ri·ty   
–noun 1. adherence to moral and ethical principles; soundness of moral character; honesty

ChrisS

If you know any restaurant or bar owners, they usually have a few of them laying around they use them to ice down beer and sometimes you can get them much cheaper or free, as in my case.
in·teg·ri·ty   
–noun 1. adherence to moral and ethical principles; soundness of moral character; honesty

Ron

Quote from: ChrisS on March 30, 2012, 02:32:14 PM
Not sure why you couldnt. I use 2 of them for a filter.

Run through your filter process.
Blue Crab Advisor to the NJ Marine Fisheries Council

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ChrisS

Well, my filter process was never quite profected, had I not changed out water based regularly, I got alot of stills. So, I might not be the best one to ask about that.
in·teg·ri·ty   
–noun 1. adherence to moral and ethical principles; soundness of moral character; honesty

Mr. Ray III

Ron you don't need to buy those tanks.  Use 2x10's and plywood.  Silicone it to stop it from leaking or let it swell.  

Why?  To save you money.  If your only gonna be holding 20-30 crabs, you only need a very small set up.  You do not need more than one tank and a 4x8 tank will be way more than you need (keep in mind, NC boys will put 400-500 in a 4x8 tank).  Make it a 4x4, put a divider in the midde for your ranks and greens.  

KI Crabber

I use  the 150 gallon version with about 50 gallons of water. I can keep 20-30 crabs for about 3 weeks before water quality is an issue. I don't filter at all, just have a layer of gravel in the bottom of my tank and swap water out every few weeks. I carry a 12 volt inverter with an extension cord, 120 volt submesible pump and hose. I fill my containers at the ramp with seawater and pump it from the truck to the tank at the house. I shed about 16 dozen last year in my basement and only had about two dozen that didn't make it.

jack1747

If you use the stock tank/s you can build a table for it then use a dry sump filter for saltwater aquariums. It would work great. No worries about leak either. Easy to clean. I got a pump for ya...
"Helping to Moderate the BCA since 2003" "I've gotten to the point in my life where I no longer give a [shiz] what people think, I'm not going to take any [shiz], because, frankly my dears, I am NOT in the [shiz] business." Quote from Suzy. :-)

Ron

Quote from: Mr. Ray III on March 30, 2012, 03:04:23 PM
Ron you don't need to buy those tanks.  Use 2x10's and plywood.  Silicone it to stop it from leaking or let it swell.  

Why?  To save you money.  If your only gonna be holding 20-30 crabs, you only need a very small set up.  You do not need more than one tank and a 4x8 tank will be way more than you need (keep in mind, NC boys will put 400-500 in a 4x8 tank).  Make it a 4x4, put a divider in the midde for your ranks and greens.  

Yeah.   I tried putting the 4 x 8 plywood set up past my wife and it got vetoed because "you have enough frankensteined looking stuff in the yard."   She's good with the stock bins.
Blue Crab Advisor to the NJ Marine Fisheries Council

11th Annual Assault on Patcong Creek Crabbing Tournament & BBQ
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ChrisS

I would think plywood alone, would leak. I lined my wih pond liner.
in·teg·ri·ty   
–noun 1. adherence to moral and ethical principles; soundness of moral character; honesty

crab24

Quote from: ChrisS on March 30, 2012, 03:48:16 PM
I would think plywood alone, would leak. I lined my wih pond liner.
it will leek no matter what but if you use gluvit it will work .

Ron

The plywood is out because of the look of it.    The wife want's the tubs back there instead.
Blue Crab Advisor to the NJ Marine Fisheries Council

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KI Crabber

If they are outside make sure you have them covered so you don't collect too much fresh water during rain storms.

Mr. Ray III

I know your gonna need a buncha oyster shells   :P

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bigcrabrob

plywood dont leak if done right . i have 6 shed tanks 4x8 made from playwood and i got 5200 on all the joints so it doesnt leak . after you use the chalk run the system and drain it to get all the chemicals out

Ron

Quote from: Mr. Ray III on March 30, 2012, 06:14:01 PM
I know your gonna need a buncha oyster shells   :P

Something an up and coming oyster farmer has in abundance.
Blue Crab Advisor to the NJ Marine Fisheries Council

11th Annual Assault on Patcong Creek Crabbing Tournament & BBQ
America's Largest Crabbing Tournament
June 25-26, 2021
Somers Point, NJ

http://www.assaultonpatcongcreek.com

To Register:
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ChrisS

Ronster, I would suggest looking at "Bio-balls".
in·teg·ri·ty   
–noun 1. adherence to moral and ethical principles; soundness of moral character; honesty

jack1747

Go with a dry sump. My Son runs 3 500 gallon reef tanks. If a dry sump filter can keep them going, a float with a few peelers is piece of cake...
"Helping to Moderate the BCA since 2003" "I've gotten to the point in my life where I no longer give a [shiz] what people think, I'm not going to take any [shiz], because, frankly my dears, I am NOT in the [shiz] business." Quote from Suzy. :-)

Ron

Blue Crab Advisor to the NJ Marine Fisheries Council

11th Annual Assault on Patcong Creek Crabbing Tournament & BBQ
America's Largest Crabbing Tournament
June 25-26, 2021
Somers Point, NJ

http://www.assaultonpatcongcreek.com

To Register:
http://assaultonpatcongcreek.com/the-crabbing-tournament/tournament-registration/

Check out the tournament's page on Facebook!
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