Udang Galah Culture In Fibre Tank

With the recent urban style aquaculture for the people who lives in the city with no land to do aquaculture business, we are also being asked so many questions regarding farming the freshwater prawn inside a fibre tank, canvas or cement pond. Eventhough we do not prefer to do it like that but due to some request, we try to do it to see the result. There are many considerations and concerns such as water changes, plankton availability and growth. However, we who are also in RND stage for this subject, try our best to help the people out there who wants to do this kind of farming.

Our setup:
We use two fibre tanks, one with clay and sand at the bottom and one without. Each holds 2300pcs of PLs. The tanks equipped with pumps for aeration, coconut leaves for shelter.

Tank preparation:
We put a handful of calcium carbonate (around 2kgs) and zeolite (same amount). The water is very dark and green

Feeding:
Around 100g of starter crumbles (crushed pallets, for PLs) each tanks, each feeding times, which is morning and evening

Water Changes:
Around 20% per week with freshwater.

Observation:
Initially, some PLs being sucked into the pump so we made some modification to it, put a bottle at the pump water inlet to slow down the suction pressure.

Many leftovers of starters and bottom tanks full of sludge, may increase the amount of ammonia, water changes is important along with zeolite application but the main thing is to take out the bottom sludge. This may need a proper filtering system which at the moment we do not have as the soil pond does not require this system.

Shrimp growth is relatively slow as compared to soil ponds due to unavailable or less plankton and natural foods. We notice that there a fewer shrimps than before but no signs of mortality. Need to check thoroughly.

That is for now, pls have a look at some pictures related to this matter.