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For the handful of us here that tinker with raising trout in indoor tanks, or have an interest in it, I thought I would share this link if you haven't seen it.

I will be building something similar to this in the future but will be using more economical 12 x 30 inch Intex pools placed on top of treated 2 by 6's and deck planking to facilitate a center drain. My side drains will consist of 4 inch siphons and the water may or may not be moved via airlifts.

Thoughts?

http://www.uwsp.edu/cols-ap/nadf/Pages/New-Outdoor-Demonstration-Building.aspx

Last edited by Cecil Baird1; 07/27/15 04:47 PM.

If pigs could fly bacon would be harder to come by and there would be a lot of damaged trees.






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Does the intex pool have a center drain plug or are you planning on adding one?

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Add one. Cut a hole In the center bottom and add a bulkhead fitting.

The pools do have side drain plugs but I never use them.

The enitire bottom of the pool is resting on decking except for a hole in the decking below the bulkhead fitting and where the drain pipe fits in.

I've also seen this done on flat ground for a quarantine koi pond where a trench was dug for the drain pipe.

The fiberglass tanks are nice but the cost is over 5 X the cost of a larger Intex pool, not counting the truck shipping.

Keep in mind the Intex pools I am referring to are not the inflatable ones. And indoors they last quite a while. I know shrimp producers that are using the same ones after 7 years.

Here is one I used as a sorting tank when I seined one of the ponds this spring.


Last edited by Cecil Baird1; 07/28/15 09:10 AM.

If pigs could fly bacon would be harder to come by and there would be a lot of damaged trees.






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Pretty cool!


Water is the basis of all life, by design!
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I used an intex pool and set up a RAS system with 100% recirculated water, used a 55 gal drum as a biofilter with two gravel grow beds with plants, worked nicely with HBG and YP. Used ecoplus 5 aerator ecoplus pump, I think the whole setup cost 200.00, though I needed to buy better lighting for the grow beds. The pool still accumulated fish waste/uneaten food which I used an elevated shop vac once a month, I added a bulkhead and drain to the shop vac cannister and pvc to the biofilter as well. Cannister needed cleaning once in a year, not a job for those with sensitive olfactory!

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Yep that will work! If you can get centripetal flow (circular teacup effect) going in a circular tank you get the settleable solids to either go down the center drain or collect around it depending on your set up. I do the latter with my raised pastic tanks, and my center drain is connected to an external standpipe. I pull a knife valve twice a day to flush solids.

My suspended solids are sucked into my siphon and are trapped in the netting of my clarifier tank.

This is especially good with my tank I have outside next to the garden. The waste water is used to water the garden and the plants act like they're on steriods!

Did raft culture all last summer with tomatoes and tilapa using a diy yamabuki airlift to move the water. No water pump needed. Produced 200 tilapia for the table. I no longer do aquaponics as I prefer to concentrate on the fish culture.

Last edited by Cecil Baird1; 07/28/15 09:45 PM.

If pigs could fly bacon would be harder to come by and there would be a lot of damaged trees.






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Do the solids flush out easily with the knife valve? Do you blow a lot of water flushing, or just replenish as you flush?

Did you ever have any luck with producing decent tomatoes on the rafts?

I also kind of kicked aquaponics to the side as I found myself splitting my concentration and really I want to focus on the fish.

I do want to try the intex pool in my non heated pole barn for the winter, but not sure how it would hold up....and yeah, the fiberglass tanks are an investment I am not sure I want to make at this point

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Originally Posted By: BeanDaddy
Do the solids flush out easily with the knife valve? Do you blow a lot of water flushing, or just replenish as you flush?


Usually the water becomes clear after about 5 gallons of flush. I know that because I used to flush into a 5 gallon bucket, but now it goes straight into a stock tank. My outside circular fish tank is 8 feet in diameter and around 300 gallons. I usually don't top it off for 4 or 5 days, which is when I drain the clarifier tank, clean the netting, and replace the water in the clarifier tank.

Originally Posted By: BeanDaddy
Did you ever have any luck with producing decent tomatoes on the rafts?


To be honest I started too late in the year and just started getting tomatoes as the first frost came. I did get outstanding massive plants though. In retrospect even though I started late, it seems the tomatoes came on later than the ones we grow in the ground. But perhaps I had too many plants in the raft tank?



Originally Posted By: BeanDaddy
I want to try the intex pool in my non heated pole barn for the winter, but not sure how it would hold up....and yeah, the fiberglass tanks are an investment I am not sure I want to make at this point


My plan is to have the building well insulated and have a south facing trombe wall to use passive heating in the winter. If my primary species in the building are coldwater species then as long as temps stay above freezing I should be good. OTOH would you have reason to believe the vinyl would have issues if it was too cold? Is that what you're concerned about? Perhaps that is a valid concern? I have south facing windows with a cathedral ceiling in my log home, we don't run any heat in the month of October, and sometimes part of November. I've had it get up to 80 F. on that floor on a clear sunny October day when it's in the 60's outside.

My goal is to showcase a system without all the bells and whistles that is totally DIY that runs as efficiently as possible with the lowest amount of overhead. I'd like to produce trophy size brook, brown, rainbow, and tiger trout for my taxidermy niche market. I have a source in Utah that sells the eggs for all those species including triploids. I hatch all my other species so I want to hatch my own trout also.

Last edited by Cecil Baird1; 07/28/15 10:57 PM.

If pigs could fly bacon would be harder to come by and there would be a lot of damaged trees.






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Yes, I am worried about the pool plastic, your situation sounds a lot better Cecil because you will have insulated building and the passive solar, mine is not insulated, my south central Wisconsin winter might be a little colder than north eastern Indiana but probably close to the same. I have read about people leaving their intex pools set up over the winter, but most of them are in southern or middle states. I think testing it would be good, but we need an exit strategy if the plastic cracks so we don't have 1k gallons of cold water flooding our building in the middle of winter, hehehe.

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Originally Posted By: BeanDaddy
... but we need an exit strategy if the plastic cracks so we don't have 1k gallons of cold water flooding our building in the middle of winter, hehehe.


Yeah wouldn't that be a nightmare if that happened and then froze!


If pigs could fly bacon would be harder to come by and there would be a lot of damaged trees.







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