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PostPosted: Jan 31st, '12, 23:06 
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I acquired 2 free IBC's from a neighbor who may eventually be able to get me more. :thumbleft:

Attachment:
20120131090556.jpg
20120131090556.jpg [ 272.62 KiB | Viewed 18039 times ]


I plan to try a constant flow setup with one IBC as the fish tank and the other cut in halves for 2 somewhat deep grow beds. This system will be designed around the discussion going on here:

http://backyardaquaponics.com/forum/viewtopic.php?f=1&t=11470&sid=3b852b3950073e2793398f353bfeebfc

Attachment:
2 ibc's airlift.png
2 ibc's airlift.png [ 18.06 KiB | Viewed 18039 times ]


The IBC's had something in them called rhoplex. Research shows it to be acrylic paint emulsion. Its main chemical seems to be ethyl methacrylate used in lots of stuff including tooth fillings! But, mostly acrylic paints. If anybody knows anything dangerous about it please say so.

Attachment:
20120131090606.jpg
20120131090606.jpg [ 184.58 KiB | Viewed 18039 times ]


Now to acquire some lumber, pipe and fittings and sort out the airlift/SLO. And figure out where to put the whole setup. :?:

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PostPosted: Feb 1st, '12, 02:41 
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Looks cool, and low energy.

Here's the MSDS info for Rhoplex, if that helps:
http://talasonline.com/photos/msds/rhoplex1950msds.pdf

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PostPosted: Feb 1st, '12, 02:47 
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Thanks Dave. I wanted to look at msds to be sure, but everything I found seemed fairly un-dangerous. I even collected about 3 gallons worth to use painting some fences. Free!
They've been rinsed with bleach and water and now I'm fillling them to soak with bleach and water for a couple of days before they get cut open.

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PostPosted: Feb 1st, '12, 02:52 
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Yep it sounds like the stuff is just plastic dissolved in water. Usually the harmful stuff is the solvents, but those can evaporate and the stuff left behind might not be that dangerous.

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PostPosted: Feb 1st, '12, 05:13 
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Seriously, this cant be healthy.
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It might be worth pointing the FT return pipes upwards at the end a bit, to keep the top few inches of water turning over.

If all the water enters and exits from the bottom half, the system might not have enough DO.

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PostPosted: Feb 1st, '12, 05:15 
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My pencil drawings include that, Bull. I didn't get that involved on the computer drawing. But, thank you, of course. Input always appreciated.

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PostPosted: Feb 1st, '12, 13:34 
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I like this system. How will you do the drains in the GBs, just holes in the bottoms, or a standpipe? How about the GB inlets? What do you think your max head will be? 6"?

I guess the devil's in the details, but this is exactly the type of thing I was hoping for the LEAP system. Very nice!

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PostPosted: Feb 1st, '12, 22:56 
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Drains will just be holes in the bottom with sleeves around them like you would with standpipes to facilitate cleaning. And will modify as necessary.
I'm hoping the head only has to be about 3-4" just to get a slope running down to a tee over the adjoining sides of the grow beds.
After reading some of those links you posted in the other thread, I'm probably going to try a different design at the bottom of the airlift instead of a stone. Drawing to come later.

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PostPosted: Feb 1st, '12, 23:27 
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This is similar to another design that eliminates airstones restricting flow inside the pipe. Also the bell at the bottom would allow the pipe to sit closer to the bottom of the tank and keep fish from being sucked in while still allowing more volume. Would use adapters to make that bell as big as necessary while inner pipe can still come down as low as needed to submerge the bubbles.
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PostPosted: Feb 1st, '12, 23:54 
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That's neat, what's the best way to make tiny holes in the pipe? Heated wire? Teeny drill bits?

Might want to somehow seal off the holes from the dirty water to keep them from clogging.

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PostPosted: Feb 2nd, '12, 00:03 
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The link I read was drilling 1/8" holes. Big enough not to clog. Small enough that the bubbles are still small enough to be effective.
Dave, how did your corn turn out? I remember seeing a picture of it in one of your threads. Was it in a constant flood or ebb and flow setup?

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PostPosted: Feb 2nd, '12, 00:45 
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I haven't ever grown corn in AP. The best year I've ever had so far was in 2008 when I had tilapia in the basement and a separate plant loop out in the back yard on the other side of the basement wall. I grew only fruiting plants to prove a point, had a lot of tomatoes, a couple cantalopes, a pumpkin, peppers, didn't have luck with green beans but was able to grow some properly this year. This year might be good as well except we are looking to move and the whole system might have to be scrapped pre-maturely. I have some plants up and some trout and it's just a matter of the weather warming up for the Spring and I can feed the fish and the whole system should pop after that.

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PostPosted: Feb 2nd, '12, 01:33 
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Crud, now I have to figure out who that was. Big forum...

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PostPosted: Feb 2nd, '12, 01:39 
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do a search for corn :)

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PostPosted: Feb 2nd, '12, 05:18 
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How are you planning on maintaining your water level Jimbo? Keeping an eye on it, cistern style plunger, ping pong ball in piping?

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