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Hi im new to this and not sure where to put this,so please feel free to move it, basically id like some advice, i have a rosy apple snail in my tropical fish tank. A week ago i noticed that it had layed two groups of eggs out of the water, and today has layed another group an a half.. whats goin on?! this is a snail on its own, will the eggs hatch? will they take over my tank?
I dont like to remove or kill anythin but what is the best thing to do? Id appreciate any advice, as i know you lot are a very wise bunch! thanks in advance.

Snails are hermaphrodites and thus can self-fertilize their eggs. If you have fish in there, they will likely get eaten by the fish. If not, they tend to require quite specific conditions for them to hatch successfully, though it does happen, and yes they can, in the right conditions, take over your tank, but if you have any clown loaches or a plec etc, you should be fine. If you have any carp varieties (goldfish, sharks etc) this can help as well, as they tend to consume the eggs, and also anything living that they can fit in their mouths lol. You should be cleaning the gravel at water changes using a python, this will also hamper the ability of the snails to breed too much.

I find quite a few snails in my filter, but not many in the tank itself. The one thing you have to careful of, is if they do breed excessively, they excrete like any other animal, and consume oxygen, so can damage the environment around them. Trumpet snails are the ones to watch for, rather than rosy snails.

However, providing your tank is well filtered and aerated, and you maintain regular water changes, unless you see lots of snails slithering around, I wouldn't worry about it too much.

How long have you had your snail? They can store sperm from a male for months,so if recently bought she could have mated,and stored.
Also they can lay eggs anyway,all infertile so will not hatch.

If yours do hatch.i'm sure an aquatic centre would take them off you to sell on,hope this helps.

Matt i didn't realise apple snails were hermaphrodites!!

Actually, I don't think they are, but they can change sex, I was generalising a little lol. Wouldn't worry about it either way though lol.

Thanks for comments an advice so far, im learnin already! complex little things arent they?!
Ive had my tank for 9 months now an am a beginner learnin as i go.I did have 2 snails but 1 parked up an died. that was about 4 months ago. I have tiger barbs, neons,a plec, and an eelie lookin thing in there too an lots of fresh plants. I was concerned that all these eggs were gonna hatch an take over me tank