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 Post subject: Tom's backyard system
PostPosted: Jul 27th, '20, 17:51 
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It's been a little while in the planning, but my system build is nearly finished:

System Component Specifications
Fish Tank: 1000l IBC, 50mm diameter SLO
Radial Flow Filter: 220l plastic drum
Sump: approx 400l cut IBC
Grow Bed: 800l black poly grow bed (2.4 x 1.2 x 0.3m) on 20mm square gal tube stand
Grow Bed Media: Nutrifield Hyrdro Clay - 700l
Grow Bed Cycling Method: Flood and drain
Pump: 4000 l/h pond pump (PondMAX Evo II EV3900). Split flow to grow bed and fish tank.
Air: Venturi set up in the fish tank. Backup 12v air pump still to come.
Fish: Still to come (I'm thinking 20-25 Silver Perch)

Location: Melbourne, Victoria, Australia

Still a work in progress. I'm planning on cladding the whole system in timber to tidy up the look a bit, and I still need to sort out the backup air supply. And get the fish of course, just as soon as the system is cycled.

Big shout out to Rob Bob for the inspiration and his endless tutorials on his YouTube channel!


Attachments:
File comment: Welding the frame on the new pavers I put down for the system to sit on
Welding the frame 1.jpg
Welding the frame 1.jpg [ 287.53 KiB | Viewed 3071 times ]
File comment: Basic system layout
System layout.jpg
System layout.jpg [ 888.15 KiB | Viewed 3071 times ]
File comment: Fish tank plumbing setup
SLO and Venturi.jpg
SLO and Venturi.jpg [ 196.45 KiB | Viewed 3071 times ]
File comment: Plumbing complete
Plumbing 1.jpg
Plumbing 1.jpg [ 903.84 KiB | Viewed 3071 times ]
File comment: all systems go
System running.jpg
System running.jpg [ 824.13 KiB | Viewed 3071 times ]
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PostPosted: Jul 27th, '20, 18:54 
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Very neat set up Tom.
Making use of lockdown?


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PostPosted: Jul 29th, '20, 03:18 
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I agree, very neat and clean setup.
The venturi looks interesting. Have you done a comparison with and without it? Just curious on the effect it has.
Looking good!

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If you give a man a fish, he can make an AP system, but if you give a man too many fish, he'll probably have problems with ammonia.

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PostPosted: Jul 29th, '20, 19:36 
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Nhibbo wrote:
Very neat set up Tom.
Making use of lockdown?

Absolutely!


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PostPosted: Jul 29th, '20, 19:39 
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Los Angeles Will wrote:
I agree, very neat and clean setup.
The venturi looks interesting. Have you done a comparison with and without it? Just curious on the effect it has.
Looking good!

Yep, I have run the system without it. It does restrict the water flow a bit, but the upside is that I'm hoping to avoid having to run a separate air pump: the venturi does that job for me


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PostPosted: Aug 14th, '20, 08:33 
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I've been waiting (im)patiently for almost a month for signs that my system is starting to cycle, and have now got some signs of Nitrite. I think the cool winter in Melbourne may have slowed things down a bit!
Ammonia: 3.0ppm
Nitrate: 0.5ppm
Nitrate: 0ppm

On the plus side, my various seedlings are starting to take off!ImageImage

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PostPosted: Aug 15th, '20, 08:05 
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Looks good Tom, well done, cant wait to see the cladding. :)
Yeah cooler weather retards the cycling process but you probably want the water to warm up a bit before adding the perch. What size are you going to start out with? What size is the inlet on your SLO?
I’m also wondering if the overflow on the SLO is higher than the top of the fish tank.

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PostPosted: Aug 19th, '20, 16:39 
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Thanks Skeggley!
I actually haven't sourced the silver perch yet. Any suggestions? The SLO intake is just a PVC end cap with 5mm holes drilled in it. I'm not sure I understand what you mean by the SLO overflow, but I've attached another photo with the tank full. I've also made a bit of an adjustment to the venturi: angling it into the tank.
The cycling is progressing well:
Ammonia: 2.0ppm
Nitrate: 2.0ppm
Nitrate: 40ppm
Ph: 7.7
Temp: 12cImageImage

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PostPosted: Aug 21st, '20, 21:44 
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No suggestions over your neck of the woods for suppliers. When I got my first silvers they were so small I’m sure some of them disappeared into the 10mm holes I put in the SLO before I realised. :P

And no mate that’s not full ;) . What would happen if the 5mm holes blocked up would the water go over the lip of the tank or into the solids lifting overflow?

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PostPosted: Sep 26th, '20, 09:39 
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Hi Tom,

Where did you get the grow media from? I'm in Glenroy and need to source about 400L for a setup I'm building that is very similar to yours :)

Thanks
Greg


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PostPosted: Sep 27th, '20, 18:24 
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Ghoward wrote:
Hi Tom,

Where did you get the grow media from? I'm in Glenroy and need to source about 400L for a setup I'm building that is very similar to yours :)

Thanks
Greg
Hey Greg. I had a bit of trouble finding places that had any in stock. I used http://auhydroponics.com/ in the end: plenty in stock at not a bad price

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PostPosted: Oct 4th, '20, 06:33 
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Hi Tom,

I'm not sure if you have found any silver perch yet. If not, I've pre-ordered some from https://australianfishsales.com.au/ in South Morang.

Cheers
Greg


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