HELP - Snail population explosion

Andrew,
I have never seen any of my Assassin Snails eating anything but Malayan Burrowing Snails - they ignore the Pond Snails totally! - I even witnessed a Pond Snail riding on the back of an Assassin Snail!!! So, in my view, the answer to your question is that they are not the route to take!

As you only have small fish in the tank why not feed live Brineshrimps exclusively for a few weeks? You would take away the food supply of the Snails - but you will never totally eradicate them, you would need something which predates upon the Snails to achieve that. OK, so the Snails would still eat the plantlife and algae but it's my belief that you are witnessing such a population explosion because circumstances are right for them to be able to do so (ie too much uneaten food as an example).

Continue your vigilance, taking out as many as you see - every day if needs be - and cut down on their food supply (including dying plant leaves). Snails are, I'm afraid, part of Fishkeeping - but you can minimise their numbers by carefully removing every one you see...either that, or get some predators of the Snails - Puffers are excellent, as are Loaches, but these may not be available to you as a solution because of the stock you are keeping in your tank - it's a very awkward scenario really!

Good luck with your task ahead, I'm wondering though, you could get away with Pygmy Puffers in there, my ones aren't especially aggressive to anything but their own kind and this includes all their other tankmates, baby Endlers, Baby Swordtails...not to mention the more 'exotic fish' such as Scarlet Badis, Apistogramma Hongsloi to mention but two. They just aren't quick enough to catch any of the others and now have abandoned trying! This is in a fairly densely planted tank as is, I imagine, yout 70l? And they are little demons at eating the smaller snails, the larger ones need crushing against the glass first.

John