Backyard Aquaponics
A place to discuss aquaponics

Since the fish are the one part of your system that has an ongoing cost, what and how do fish need to be fed? Whats your method to feed fish you have? How much does it cost you?

In our case, does anyone have any advice on our scenario?

If we had 35 - 40 Barra, how much do they need to generally be fed, and when?

Is 35 - 40 Barra too many fish for a 700ltr tank?

In other words - Whats the cost in feeding any fish? Where do we buy the food? Its our plan to feed them worms also when the worms come online...

Or in other words... how many fish do you have at home... and how much do you feed them?

It would be based on fish mass. What is the average weight of your fish?

start with barra fingerlings. Ive secured 35 to 40 barra. Plan ATM is to have a 700ltr tank. What do barra fingerlings eat - Year 9 students?
(this is at a school)

I feed my 100 very small Silver Perch and my approx 12 Medium size Jade Perch about 3 or 4 tablespoons of small Ridley Native Perch pellets every third or fourth day. I also float some Cos lettuce leaves in the tank, because that is how I know when to feed them the pellets again, as the Jade Perch start to rip hunks off the lettuce leaves when the all the pellets on the bottom of the tank have been used up.
Monya has Barra and so does Aquamad, so they should be able to give you a steer on that
Murray

i have around 200 plus barram I feed bwtn 50 and 100 grams of small pellets per day spread over 2 or 3 feeds. Warmer water temps equals hungrier fish, so i basicaly feed them as much as they will hungrily eat over a period of a couple of minutes. When they are really hungry the surface of the water boils and their tails crack the surface as tghey hit the food. Its pretty cool

I like the cos lettuce idea... very inovative

Still trying to work out a feeding routine for my SP (only have 20-ish), feeding them of an afternoon, half a tablespoon of pellets crushed - they don't seem to be hungry of a morning.

Toss in some lettuce leaves and they definitely nibble on them

We don't have our "Real" fish yet, but we have (I think) 5 spangled perch, 30 rainbowfish, and maybe 20 fry of indeterminate species (prolly rainbows).
They get fed 4 pinches of goldfish crumble morning and afternoon. There is also duckweed in the tank. Any termites (Mastotermes sp.) that get found are added, as are green ants.

I have about 30 silvers in each 1.000 litre tank i give each tank a table spoon night and morning and keep duckweed in each tank all the time

Should add - mine are only fingerlings (except for Arnie and his rebels)

My 30 or so perch - 25 of which range between 15 and 23 or so cm - get fed 50 to 100 grams of 4mm Ridley native pellets a day. If they were in a bigger tank and if my bed tooke the nitrate out better, they would get more than this. I stop feeding when they don't rise to the food anymore or at least snap up anything that starts to sink.

It seems that duckweed help feed the fish huh, as well as work on cleaning the water...

http://www.mobot.org/jwcross/duckweed/p ... quaculture

interesting site on duckweed...

Oh, i forgot to post this a while ago! I'll put it into a more useful section later.

Duckweed has a preference for ammonia as its primary nutrient, so it can help a cycling system keep reasonable ammonia levels.

I have just found out that java moss has a preference for nitrite as its primary nutrient.

So with both of these aquatic plants you can really control ammonia and nitrites in a new system without water changes!

I've seen a picture of a fish in a 1 litre container. Two seperate containers, one was a control the other had a few tufts of java moss. on day three the control had a nitrite of 1 or 2 ppm bu th the one with the java moss was still zero!