Hydroponics + Fish Tanks - Tropical Fish Keeping - Aquarium fish care and resources

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post #1 of 22 Old 03-15-2011, 02:06 PM Thread Starter
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Hydroponics + Fish Tanks

Has anyone here ever seen (or used) this concept. Growing crops hydroponically using water from a cycled (very large) fish tank. Aside from some ph tweaks, some nutrient additions it is a practial sump system (or so it seems). I am just looking at it, doubt I'll ever do it, but am wondering if anyone here has tried this.
It seems very practical. The plants cycle the fish waste and give fresh water back to fish.
Grow the right type of fish and you can eat them.
Thanks.

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post #2 of 22 Old 03-15-2011, 08:10 PM
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It's call aquaculture. I have never done it but I have seen a pretty elaborate setup on a forum where a guy had an aquaculture vegetable garden.
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post #3 of 22 Old 03-16-2011, 12:01 AM
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cool

i have a friend who does something similar...he has a 55 gallon tank full of tilapia and beneath is a sump made of a rubbermaid bin holding plants up in the lid with an air bar underneath in the sump as a resivour..he had lettuce under neath with T5 lighting..he is hoping to eat the tilapia in the long run.pretty cool ..

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post #4 of 22 Old 03-16-2011, 01:39 AM
no.... I just pour waste water in the garden during the summer. Its a neat idea and all, except lighting for that indoors would be expensive.

.... I'm probably drunk.

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post #5 of 22 Old 03-17-2011, 08:15 AM
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Is this a new trend? I see hydroponics stores all over las vegas now. I just picture people growing organic marijuana..:) Gardens..my a$$..lol

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post #6 of 22 Old 03-17-2011, 09:26 AM Thread Starter
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It is possible although I do not think it will totally take off, so to speak. Some is being done because we have a nasty habit of building houses on farmland. There is little enough as there is. We can eat our houses when the crunch comes. But there is also a looming water shortage. I do not know where hydroponics is going to fit in, but it may well be a squeeze.
I used to work at a Meijers store in Ohio; we used to get hydroponically grown tomatoes. They were every bit as good as what came fresh out of a garden and they were available through the winter.
This is trying to cash in on the best of both worlds: growing fish in the water and plants on the water.
Someone here mentioned that this guy has a sump and grows some edible greenie on it. This concept is a little different as the 'sump' is on top rather than on the bottom. It has the advantage that, in case of a power outage, there would be less of a flood as there is less water in the top veggie section.
If I were younger, more ambitious, I'd probably attempt it, most likely with trout.

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post #7 of 22 Old 03-17-2011, 10:46 AM
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I've been seriously considering doing an aquaculture experiment of the most casual sense..

Woudln't be true hydroponics though... Just get a small pot, fill with soil, plant something in ti (possibly lettuce) and hook it to the side of the tank...

I think it would still be just as mutually beneficial. *shrug*

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post #8 of 22 Old 03-17-2011, 11:00 AM
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yup

try it out redc..i havent done veggies yet. just use filter floss and or small lava rocks as a media ..that is how i grow many of my house plants especialy cuttings..right in the hang on filter.

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post #9 of 22 Old 03-17-2011, 11:30 AM Thread Starter
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Interesting idea redchigh... I have wooden covers on my aquariums to keep the cats out. All one would need to do is suspend plants over the top of the tank so the roots would dangle in the water. Only problem might be (aside from light) if the fish decide to nibble on the roots.

One possible method would be to raft the plants using styrofoam.

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post #10 of 22 Old 03-17-2011, 07:53 PM
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I like the styrofoam idea but you would lose alot of light to it assuming over head lighting. How about using rockwool pots suspended to the side of the tank.
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