Backyard Aquaponics
A place to discuss aquaponics

Hello, this is my first post.
I read almost all articles, but I did not see a topic about the time of fish growth.
It is cold in winter and the system may be spring, summer and autumn.
What fish can be grown on such a system. And how big they should be to be able to grow up until the autumn. For example from April to October.
Excuse for the translation.

Hello I am new too. I could build up an aquaponics system at professional level, I think. Not so sure, but still it can happen, that depends on how much soil I have, which I have, but not sure the exact measure, my parents still don't tell me.
It's already mine and it will be mine soon. So.
I started to consider this a mastermind business against which is not easy to say no.
But still they don't let me, they fear bad people around the tropical area of origin of my mother.
Anyway, I should even check if there is legal to grow marijuana. Let me see.

So In the 2 tanks I have here is what I started with:

100gal, 8/2016: 24 2-3 inch tilapia (fingerlings)
TODAY: these fish are between 6-10 inches. Some weighed 8 oz.

50 gal, 9/2016: 100 + fry about 1/4 inch
Today: these are between 3-5 inches. I know some were eaten by a bigger fish that jumped from one tank to another (super lucky fish).



During winter water was below 70 degrees from Dec-March because I ran heaters.

IN april these guys really kicked up their appetites. They eagerly wait for my feed visits. Water now in the low 80s. with a little heater help.

As you're in Bulgaria, and you mention temps, i think the fastest growing fish for you in your part of the world would be rainbow trout. I think a lot of people here on the forum grow fish from fingerling to harvest in 6 months.

Trout will survive very cold temps but grow a lot faster when its a lil warmer. Be careful though, if temps pass the mid 20s they are in danger, and it will take little to kill them.

I think in your area you could raise a one-person portion size trout from spring to autumn, or to decent table size the following autumn.

Thanks. The summer temperature is high. 30 degrees Celsius. Today is 40 °. Winter normally -10. Peak - 20 for a few days only.
I will find it difficult to watch trout. Although I like her.
There are trout in the mountains, but there is cold water.
Sharan (carp) can endure, but I do not know how big to get it.
What fish do you grow at a summer temperature of 30 ° C.

Hello again, is not there a website simulator/calculator for all this stuff and more?

And whether it is possible to grow river crab under these conditions.
And how many can be put per liter of planted area. As for fish it is 25 liters. Per kilogram of fish. Is it so much for crabs?

Thanks, it's over 6 months. Closer to a year. 8 ounces = 225 grams. That's very little. For 10 months growth.
With us there is a tilapia of at least 50 units. And it makes no sense To buy them all as soon as it grows slowly.
Sharan also grows fast and can withstand cold. But is cheap. I have to breed 5 pounds of carp to pay for the pump. In one IBC.
Apparently a home system has no future for our climate. Given that the soil is fertile and gives birth much. I wanted to raise fish.

I'd look at using a Recirculating Aquaculture System to get through the winter there. Basically you'd be making the system fish only and much smaller so easier to heat (You could put the setup inside as well). You could either connect up some plant beds during the warmer months or use the water on what you are growing in the ground. Some type of catfish might work for you and Koi might be an option instead of Sharan.

You have to make it 1 meter deep, have 4 degrees Celsius temperature. And the pump should be stopped so it does not cool. I do not want winter to do it. For now I'm giving up. Economically, it does not make sense under our circumstances.

Your probably right that it won't be cost effective to run through the winter and it's pretty tough to completely grow out most fish in one season if your temps aren't warm long enough. Hope you figure out a way to make it work in the future though

Thank you for the advice.
After a time I might have a greenhouse for vegetables. Then I can use it for AP. If there is no need to heat it.