Re: Frog eggs underwater on glass?
Perhaps I seem over precautionary but be careful with snails in water features, you have to keep an eye on them and it can be difficult. They can station themselves very discreetly and the problem is, if they die they decompose very rapidly and nastily, contaminating the feature .
In aquaria when a snail dies fish will find and eat the snail corpse, completely picking the shell clean in no time, evading the problem.
It is one of those under the radar communal mystery fails where fate shoots the butler and the butler takes the whole mansion down with him.