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 Post subject: Re: Damian's system.
PostPosted: Mar 6th, '15, 21:55 
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here are the pictures of the media in different stages. sorry i took so long.


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 Post subject: Re: Damian's system.
PostPosted: Mar 6th, '15, 22:13 
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The first batch i cut up by had was in 2006-2007 that is why its in cubes. it works the best but tooooooooo much labour.

Coir is the stringy fibers.

Peat looks like soil.

I did grow potatoes in this system they turned out great.


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 Post subject: Re: Damian's system.
PostPosted: Mar 7th, '15, 10:31 
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Thanks for the pics Damian. That is a very cool system you're running.


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 Post subject: Re: Damian's system.
PostPosted: Jun 10th, '15, 11:22 
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Great to see someone using coco husks, they are light and cheap. I'm in Thailand and want to do the same. Do you have any recommendations for:
GB depth, size and design
Water regime - do the get waterlogged?
Do they effect PH?

Thanks!


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 Post subject: Re: Damian's system.
PostPosted: Jun 26th, '15, 21:47 
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a little late but the coco husk should be deep enough that it will form a dry "mulch like" layer on the top to minimise evaporation about 1 foot. You have to water like hydroponics until you get a established root system then you can run constant flow.

cocohusk self regulates the ph in aquaponics.


Last edited by Damian on Jun 26th, '15, 21:49, edited 2 times in total.

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 Post subject: Re: Damian's system.
PostPosted: Jan 25th, '16, 10:45 
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I have been doing some work and got the fish tanks in place and some of the water distribution manifold track dig. Still looking for ways to power this system using the 1000w solar array. If I could use a nice DC pump that would be nice.

The final design is still out there but I am narrowing it down. Have the grow beds split into 4 groups of 9 each with a separate pump instead of remote valves to ease the automation process, the numbers say I will need 4 pumps that can run 600gph at 70 feet head each. I hope to control this from my smart phone. Or a rainbird smart irrigation controller. The blossoms are nice too.


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 Post subject: Re: Damian's system.
PostPosted: Jan 30th, '16, 22:42 
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thinking of getting a irrigation controllers to control my system this would make automating a lot easier.
now i need to start looking for a way to auto feed.




My system design is coming alone nicely as i am seeing what needs to be done. i should complete the rearrangement by march and then look to by stuff hopefully i will be finished my MAY 20th my birthday.


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 Post subject: Re: Damian's system.
PostPosted: Jan 31st, '16, 01:38 
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Do the coconut husks break down after a certain period of time?

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Specs: 2600 gallon (347.56cf) Masonry fish pond. 44cf GBs. 200 gal (26.7cf) ST. 15 gal (2cf) RFF. 50 gal (6.7cf) biofilter. Brook trout and Comets.


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 Post subject: Re: Damian's system.
PostPosted: Jan 31st, '16, 07:27 
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boss wrote:
Do the coconut husks break down after a certain period of time?

Hey Boss, what I'm seeing or reading above is that they do break down to a soil-like humus, but that Damian has found that they are still satisfactory even in that state. Damian, please correct me f I'm wrong.

Damian, mine is smaller than your needs, but I am very happy with the cheap(ish) chinese brushless DC pump I've got. Type DC50 I think, it's now been running for more than a year, run dry at least 3 times for hours to a day or more, and stopped once when it ingested the tail of a small snake. I pulled/unwrapped the (dead) snake, then popped the front off and removed the bits left behind, and it has run fine ever since. I think I am going try using multiple pumps like this one to feed multiple loops in my next system, instead of one bigger pump. More pumps to fail, but less damage if a single one fails.

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 Post subject: Re: Damian's system.
PostPosted: Jan 31st, '16, 23:05 
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Coconut husk gets better with age. you are correct Gingerbread man. if you look at the second pic on this page you can see the early stages of decomposition the pic was taken after a flood so you could see the amount of worms in the grow beds look closely and you can see the pink lines they are actually earthworms and they do a great job along with the plant roots to break down the media.

After some years it looks like soil but it isn't because if you let it get dry at this point its hard and unbreakable like rock.

Gingerbread man i am now choosing the pumps i will need i need a small 800gph and a large 100gpm pump. the small ones will be start stop and the large continuous once the sun is shining as i want this one to be direct to the panel. I like that your pumps are durable as i keep hearing how finicky DC pumps are but very few people on the island with experience with them.

I also think that multiple loops are a better way to go should be less energy usage too.


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 Post subject: Re: Damian's system.
PostPosted: Feb 1st, '16, 11:47 
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Damian, my pump came from aliexpress, the same pump as this one. Probably undersized for your needs. If you poke around a bit, you can find flow/head charts for most of these bldc pump series. I have not measured flow, I run it at 19v into the controller (old laptop power supply), and at about 2/3 up on the speed dial, at 1.2m lift I'd guess its doing about 5l/min or so. Full speed at 19v i'd guess at about 20ish l/min at the same lift. I've never fed it 24v, but based on my experience with this and other electric motors/pumps I'd expect it to be a little less than 40+l/min shown in the chart I found here: Ali Chart.

That said, I understand that start-stop is the hardest on these pumps, as it generates heat in the impeller drive magnets, I think. Your experience may vary from mine, but I am happy, and will be using a pump of this type for each loop of my larger system. I bought this one thinking I'd run it and air pumps from 24v solar/battery supply, but I have not bothered to get it solar, or even grid fed, battery supply. I really ought to do so, because I'm curious if a fully charged 24v (actually 28ish) will cause damage. I would guess that the 12v pumps would be better able to handle this, but the controller components may not like a fully charged 28+volts. Never bought the 24v air pump, as the 24v models were overkill for my needs. In hindsight, for this setup I'd have probably been better off with a 12v, not 24v.

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 Post subject: Re: Damian's system.
PostPosted: Feb 2nd, '16, 11:09 
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I would need a pump that can do 375 LPM for 10 min up to 6 times a day. Would this be to difficult to do with a DC pump?


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 Post subject: Re: Damian's system.
PostPosted: Feb 3rd, '16, 07:06 
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I got the fish tanks lined up today, 13 of 14 at least. I am well on track. A good day work today I am so tired


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 Post subject: Re: Damian's system.
PostPosted: Feb 3rd, '16, 08:33 
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Nice going Damian. That's an impressive load of tanks, did you manage to get them second hand or new? Have you got some form of diagram or design for your system, I would love to see it, very inspirational, thanks.

Martin.


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 Post subject: Re: Damian's system.
PostPosted: Feb 3rd, '16, 20:32 
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Hi Martin here it is
the white squares are pumps
yellow are flow sensors
the red is a sand filter.
green are grow beds
Blue are fish tanks
Light green is plant sump
Dark blue is swirl filter and bio filter


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