Originally Posted by MarcusTheGreat
i now have 2 tetras with no eyes someone help
Does this mean the first tetra has lost his second eye since your original post and the second tetra lost 2 eyes in 30 minutes?
If so you may have a case of popeye in your tank. Do you notice any tetra with eyes that are bulging out a bit too much? I know their eyes are small and poke out a bit anyway, but there eyes shouldn't buldge too much.
If it isn't popeye, then I would remove the piece of drift would that is sitting in the tank at an angle. The may be coming to close to the edge while they swim around. The wood that is sitting like a log in you picture should be fine.
If that doesn't work then your betta may be attacking your tetra when you aren't looking.