Vossen larval trap issues with clownfish fry

[darkside7747]

I’ve had this trap for a while and my clownfish are on their 8th batch now and I can only manage to get 5 fry each time while I see hundreds of eggs I only have clowns in my tank and a royal gramma I place the trap on the opposite side of the eggs and the eggs are on a rock

 

[Fish Are Friends]

@chad vossen

 

[dthom]

Have not used one, but if I remember correctly, they are using the principle of the fry being attracted to the light and then "sucking" them into the trap. So I only have a couple of thoughts, do you have any other light sources in the room right after lights out that may be drawing the fry away from the trap? The other would be water flow. Are your other pump's turned off so that the fry can easily swim to the light? Also, what about the fish in the tank. Could most all of the fry be getting eaten before they can make it to the trap. Even the parents can eat some of the fry as they are swimming around. Good luck!

 

[Fish Are Friends]

I’ve had this trap for a while and my clownfish are on their 8th batch now and I can only manage to get 5 fry each time while I see hundreds of eggs I only have clowns in my tank and a royal gramma I place the trap on the opposite side of the eggs and the eggs are on a rock

The Parents and the Royal Gramma are likely eating the fry.

 

[darkside7747]

The Parents and the Royal Gramma are likely eating the fry.

My clowns struggle to catch brine shrimp that I feed with a skweegy so I doubt it

 

[chad vossen]

The gramma is likely eating the fry. I've seen other fish sit at the trap and eat the incoming fry too. Even had someone send me a pic of a fat banggai cardinal that was INSIDE the trap the following morning.

Otherwise, flow in the tank could be too high, making it hard for larvae to reach the trap opening.

 

[darkside7747]

The gramma is likely eating the fry. I've seen other fish sit at the trap and eat the incoming fry too. Even had someone send me a pic of a fat banggai cardinal that was INSIDE the trap the following morning.

Otherwise, flow in the tank could be too high, making it hard for larvae to reach the trap opening.

thanks for the reply but the gramma doesn't seem to come out at night and I turn off the flow during the hatch