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PostPosted: Sep 12th, '06, 04:43 
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This is a sketch of my current system. I will post pics tomorrow.


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PostPosted: Sep 12th, '06, 04:50 
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Looking forward to the pics.

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 Post subject: Re: More pics to come
PostPosted: Sep 12th, '06, 04:54 
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Floor Plan


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PostPosted: Sep 12th, '06, 05:01 
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I like it MF. Limitation of this type of design is that the sump would always have to be bigger tahn the combined voume of the grow-beds, which in your case it is. Given optimum fish tank to grow-bed ratio of 1:2m this will often not be the case. (Edit: Though of course the bed will be less than 50% water - so this helps).

Only other possible issue I see is keeping the fish tank clean given that it is empying via a standpipe at top of tank (and therefore not getting stuff out that settles to the bottom. I pressume the job of the circulation pump is aeration and to stir things up a bit. To stir things up though you would ned this to flow around the bottom of the tank and maybe use venturi action to get the air in.


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PostPosted: Sep 12th, '06, 05:08 
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Mike, what's the footprint (dimensions), of the your whole system?

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PostPosted: Sep 12th, '06, 05:25 
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Plant and fish pictures are money


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PostPosted: Sep 12th, '06, 05:27 
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But not when it comes to PES, sigh. LOL

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PostPosted: Sep 12th, '06, 05:29 
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VB, correct and....correct. The standpipe is actually a venturi drain design and sucks from the bottom, but could "stand" improvement. The circulation pump is for aeration and to keep solids flowing toward center drain at the bottom. Yes, majority of grow bed volume is substrate and therefore less water volume than 100 gallons. However, I continue to add growbed space as the system matures. Sump drainage is a major consideration because I am space constrained and not in a floodable space. The entire footprint is 13x24 feet. I will be adding one more grow bed alongside the others this winter, and then vertical from there as time and money permits. Anything verticle will drain directly into the stock tank. The 120 gallon per hour pump is solar driven and therefore aeration will always occur unless power failure occurs at night, or on a dark rainy day.


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PostPosted: Sep 12th, '06, 05:32 
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Ahh, nice. Give the specs on that solar pump please Mike?

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PostPosted: Sep 12th, '06, 05:38 
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wow, that looks like a great setup. Can't wait for the pics :)

How long has your system been running for?


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PostPosted: Sep 12th, '06, 05:39 
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Cool Mike - can you tell us more about how the standpipe works. How wide is the pipe and how big is the hole in the bottom of the pipe that sucks in the solids as the water flows from the top?


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PostPosted: Sep 12th, '06, 05:46 
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http://www.wholesalepumps.com/Product.c ... 41&PID=857

My pump is actually rated higher than 120 gph, but it's not always at peak performance. When the sun goes down or clouds cover I have two marine deep cycle batteries to keep the pump running.


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PostPosted: Sep 12th, '06, 05:52 
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Standpipe outer diameter is 4 inches, inner pipe is 2". 4" pipe descends to a less than half inch over the bottom of the tank while the inner pipe is plumbed (from the side of the tank) inside the outer pipe. The inner pipe length is roughly 3.5 feet creating enough velocity to suction from the bottom. It is cut about 10 inches shorter than the outer pipe. The outer pipe sits one inch below the top of the tank.


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 Post subject: Re: More pics to come
PostPosted: Sep 12th, '06, 06:00 
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This is the Venturi drain sketch


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PostPosted: Sep 12th, '06, 06:02 
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Daniel,

System is now 8 months running.


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