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PostPosted: Aug 7th, '17, 22:52 
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Hi rendang,

Great looking system you have there! I've been eyeing it off as one of the examples of using a rainwater tank for FT, and apart from visually answering some questions with the great pics, it's also making me think I might copy the mini orb cladding idea to help it look tidy when it's done (and assuming helping with some insulation).

However, I DO have a couple of questions that I couldn't see the answers for - apologies if I've missed them.

Please excuse the demanding list format :)

- What is the diameter of your tank? Incidently I've also been looking at a 5000L tank so would be good to compare.

- What heights did you cut them at, and after digging slightly, what kind of heights are the lip from the ground?

- I couldn't quite tell from the setup photos - did you add a metal ring to the top as I've seen other posters suggest, and if not, have you had any issues with warpage at all? And is that just some irrigation pipe you've used as a top edging?

- Is that insulation you've used similar to the flooring underlay you get at hardware stores? I've been trying to find a cost effective solution and came across this the other day before I saw your thread. Has it (and the mini orb) helped with regulating temperature variation much?

- Am I right in assuming that you've got a gravity feed from your tanks to either a RFF/SWF and then to the GBs and finally back to the sump? Do you have a split flow from the sumps or does it all go to the FTs?

- And what size pump are you running? My system is on a slope so I'll have to upgrade somewhat, but it'd be good to have a starting point in a real system that is a similar scale to the one I'm planning on expanding to.

Sorry to bombard you with so many q's all at once! I just saw a cheap tank on gumtree and would rather jump on it, but have to figure out the changes to my setup as I was originally planning on having two IBC FTs for the new system, but am now thinking larger round tanks are a better option.

Cheers! :)


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PostPosted: Aug 8th, '17, 16:53 
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Bordering on Legend
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Hi pyro, thanks for your comments I'll answer some questions now and some tomorrow . The tank I used was also 5k litres and it made a really nice couple of tanks, it wasn't corrugated so I could put the window in which was about the best thing I did since I built the system.
I didn't add a metal ring, just the irrigation pipe around the top to hide the edges of the tank and mini orb (its all quite stable), not much insulation in between either just some thin foamy stuff I had lying around which I don't think makes any difference but I think it would be good to do it if you could find something cheap and suitable. I shade the tanks during summer and I think that helps a lot.
Yes I pump from sumps to tanks only splitting it to the two tanks, then its all gravity. 7200 lph Laguna Max Flo, bit pricey but quiet, efficient and reliable (so far ! ).
In general I tried to keep my system simple as, no towers or nft pipes etc and I think round tanks are better if you can get them for a good price.
All the best with your system ! Ask as many questions as you like and make sure you start a system thread so we can follow your progress. Keep in mind I'm a backyard amateur, plenty of people here with way more knowledge than me but I hope I can help. Tomorrow I'll get the tape measure out and answer your other questions. Cheers Steve.

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PostPosted: Aug 9th, '17, 15:42 
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Bordering on Legend
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Hi.
I got the tape measure out and the diameter is 1700 mm, the depth is about a metre at the edges, deeper in the centre. The ground is sloping slightly but I guess the edges of the tanks are dug in about 100 to 200 mm.
I've also got a smaller chilled system , just trying to link it to my signature and post some pics of my trophy salmon, but I can't remember how to do anything these day's.

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PostPosted: Aug 9th, '17, 16:23 
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Bordering on Legend
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Attachment:
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PostPosted: Aug 9th, '17, 17:07 
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Bordering on Legend
Bordering on Legend

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One of the 6 salmon I have, enjoying life in the Winter Palace . In a couple of months when it warms up I'll put them in the Summer House and try to get them thru another year.
We tried to strip them a couple of months ago but all I got was a tiny amount of clear fluid so we thought they were all males but now I think we were a bit early because last week I found a bunch of eggs in the swirl filter.

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PostPosted: Aug 8th, '18, 18:57 
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In need of a life
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Hey Rendang, anything going on recently?

Martin.


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