Backyard Aquaponics
A place to discuss aquaponics

Think you will find it is a bit of everything.

Some fish are school fish and do better in crowded situations others suffer.

Levels of oxygen will affect the fish health and size.

Exercise will probably also affect then but in which direction I don't know, maybe lack of exercise might make them fat or maybe more exercise might give them eat better

Waste water will have an affect.

Feeding levels also, too much and the water quality drops, too little and the fish don't grow.

From what I have seen in these forums people tend to get a better growth after the first batch. Basically when the system has matured and is giving the best filtration, removing the most wastes and allowing a higher feed rate.

How long is a piece of string F7F, I would say 1 tank as they have more room to move around even though the same space is used at 50 or 100, but I wouldn't put 100 in 2000lt's, as mentioned earlier in the thread I have 50 in 3000lt's and have the same meat as 100 in 3000lt's, so depends how big you want your fish

Well after having a critical failure myself today I certainly wish I had two separate systems. So far lost 1/2 my fish, possibly more.

yours should be fine JP now you have water and air