Daily Update: Tilapia breeding and feed

Tilapia Fish waste solids from the filtration system

What is happening to the Tilapia waste solids from the water filtration system in the commercial production aquapoincs system?

The solids are being used to fertilize the nearby tropical fruit trees.

Previously the Tilapia fish waste solids were meant to be going into the duckweed grow bed system, which provides part of the feed for the Tilapia .

The duckweed system is not at full production yet, and we figured it is in lack of nutrients, so we have been adding Chicken waste as a nitrogen source, and Duckweed likes the ammonia.

Solution: We need to talk to the team to figure out why where they have to be going.

Tilapia breeding room

What is the correct temperature for the Tilapia breeding system or the hatchery?

The water for a Tilapia breeding system should be at 25 C for ideal mating conditions. Right now we are at 22 C and the fish are not mating, there are no eggs, and there does not seem to be any mating circles. Previously we figured the temperature was too high as we were up to 29 or 30 C at some times during the summer months. Juan seems to remember that the fish were reproducing at 28 or 27. That might be the upper range for heat. We bought an aquarium chiller for the summer when the temp goes that high.

Perhaps we should start tracking the fish – how many mating sets are pregnant, name each mating set, organize it to get more efficiency of out of the hatchery.

Solution – We are planning on connecting one of the grow beds from the nursery to the Tilapia breeding take system. It should have the additional benefit of helping to clean the water. We were thinking that the nitrates were too high previously with Nico.

We are not too concerned with cross contamination because the systems are already shared – one way is from the fry Tilapia leaving the breeding room when they become fingerlings.

Black soldier fly larvae harvest

Today we had one ounce of Black soldier fly larvae from the original larvae harvester.  If you remember, Nico started the harvester with chicken waste solids and compost.  It’s now producing about two ounces a week.  There is lots of room for improvement.  I’ll write a blog post about the entire system, from Nico to where we are right now