Question about planted aquarium and fishless cycling

Nice to hear your problem has gone away.  

Keep up the good work and your fish should thrive.  

For the snails, you need to remove them before your have unfixable situation.   If I am not mistaken, most likely these are pond snails which will reproduce very quickly if there is a surplus of fish food in your aquarium.   Each of them is a male and female in one.  So when two of them mate, both will lay eggs.   Before you know it, you can pick out dozens of these little pest snails every day while your action will have no impact on their population.  

If somehow your pond snail population gets out of hand, you may use the the methods in the following article to fix it.
How to Get Rid of Pond Snails in Home Aquariums


By the way, I'd love to see some photos of your aquarium.  Or maybe a video.