What kind of eggs are they, and what do you want to do with them??? There are really too many variables to give you a good answer with what little information you've provided us with. If you don't want them, just scrape them off and throw them away. To hatch them, you need to know what kind of eggs they are, and if any of your current aquarium habitants might prey on them. You may have to remove them, you may need to let them be, but section off part of the tank, they may be fine just as they are. Sorry I can't be of more help.
the water won't affect the eggs and they still have plenty of time to hatch
They give birth to live babies they don't lay eggs at all
that is how fish take care of there eggs sometimes
No
maybe but no one can be certein
It should be a ten gallon tank and should have a bowl of water to lay the eggs in.
Usually at the bottom of the tank in the rocks.
no it is best to remove the eggs with the plant that the eggs are on otherwise the parents will eat the eggs
get the eggs out and put them in a separate tank because the fish will eat the eggs.
they just settle at the bottom of fish tank
Terrapins lay their eggs on land.
It all depends on what you want. In other words, if they are fish eggs do you want more of the same fish that are in the tank - and the same for snail eggs. The kinds of fish you have will tell you about the eggs and where they are found. Sclares (angel fish) deposit their eggs on the glass or a leaf. Cichlids usually drop their eggs into the sand. Siamese fish blow elaborate "egg nests" made of bubbles. A small gel-like patch on the side of the tank is usually snail eggs - unless you have a large snail such as a Mystery Snail.