Backyard Aquaponics
A place to discuss aquaponics

Sys 1 & 2 each have their own 1000 lt FTs plus about 500 lt of cycling water that drains into sump tanks.

Sy 1 16 - 9-13"
Sy 2 16 - 6-9"

System 3 has a 300 lt SS FT/ST

Sy 3 20 - 4-6"

The plan is to have dinner plate fish all year round by consuming sy1 residents, move sy3 fish to sy1 then get another 30 - 2" fry for sy3.

The fish grow at varying rates so the largest ones will get transferred to the appropriate tank and the smallest ones will remain in Sy3.

Thanks, That would be about 10 kg per 1 m3 FT. Crackenfish has up to 20 kg per m3. yours just right for happy fish.

>> Thanks may i know how much fish you keep per 1 cu mtr water, by weight?

It really depends on the type of tank you are running and the level/type of water filtering.

Most stocking is based on a harvest size of around 500g or so (depends on species of course).

An IBC will limit at around 25-30 fish at plate size (again it depends on fish type).
People have pushed them to 40-50 but the risk is higher. 30-50 is probably feasible in a 1000-1500L circular aquaculture tank if you are practising progressive harvesting.

**BUT** stocking ultimately comes back to what method you are going to use and how much grow/bed/media you intend to have, and/or the level and method of filtration.

>> Thanks Darren i guess have to try. Its hot over here and my lettuce on the SWC seems to be malnourished.

missed this in previous replies....

lettuce will be a hard one in your climate (Philippines). So you will probably never get heads of lettuce.

try Asian leaf vegetables, rocket and hardy pick as you go types of lettuce.
Also you can just pick leaves from things like cos lettuce rather than waiting for heads to form.
I find that is more effective. So have lots more lettuce but progressively pick them.

We have lettuce here but is grown up in the mountains where its colder. My children ate like rabbits with lettuce so I am trying my best. I tried the tropical variety. Romaine towers.

Here in Thailand which is a very similar climate Grand Rapids are the first choice,but when the conditions improve butter head,green oak,red oak will do well.

thanks Dasboot will try to find that varieties