If you go to the store and get a turkey baster and use it very carefully it will work too if you do not feel comfortable with a syphon in this situation but you just stay as far away from the nest as possible so as not to suck up the fry. You can slowly take the amount of water down this way and not cause an over movement of the water. Just go to the farthest corner away from the nest and do the removal very slowly.

You may want to remove your heater as the amount of water in the small tank will not be sufficient to keep that heater from overheating the water and cooking the fry.

The only other product that I know of that will work and I have checked with a friend who used it on her betta fry recently is the Atison's Betta Starter Food. It is a powder form of food and fry can handle it and it will not foul the water.

Rose