Finally I see a definite progress... Meaning I see less snails than before, and
Pols like that they keep going down....
The vegetables did not worked for me, lettuce or zucchini, few snails attached to the vegetables and every time that I tried to pull it out, half dropped as soon as they felt the movement.
What worked for me was:
1. Reducing the amount of food offered to the fish, I was overfeeding.
2. Assassin snails, I added 8 to my tank, they started slow but surely are eating tiny pond snails.
3. Removing by hand, I started to remove 20 to 30 every day, no I don't bother any more because I barely see 5 to 8 in the mornings, and I know that my assassins will eat them soon.
Thanks to all that help me here.