I bought an amazon sword about 2-3 months ago and for the first little while it was great... growing nice ect.... But then the snails started.... In my 10g its fine there are not a lot of them so usually when i find one i just take it out and get rid of it. BUT in my 5 gallon they have EXPLODED in population for some reason or another... Ive already tried taking the tank apart and washing it all out.. this obviously didnt work since i swear those stupid things could survive a NUKE! lol - I know they are not harmful to my betta, this is not my cosern I just think they are ugly and I do not want them infesting my tank... How the F do I get rid of these ugly little hitchhikers!
kill kill kill. lol go on a snail killing spree. If you can, completely take everything out of the tank (gravel, filter, heater, fish) and salt the heck out of the water in the tank. You'll need to get a new filter cartridge but the salt should do it
Are they pond snails or Malaysian trumpet snails (MTS)? MTS are actually beneficial because they burrow into your substrate and keep it stirred up.
Anyway, if you have pond snails, you can stick a piece of cucumber in your tank overnight, and the next morning it should be covered in snails munching on it so you can just fish it out and throw the cucumber + snails away. Repeat as necessary.
Puffers and some loaches eat snails, but your 5G+betta is not the appropriate home for those fish, so definitely go the cucumber route.
Snail populations (for pond snails, ramshorn, bladder, MTS) generally correlate to the amount of available food in the tank. Cut back on feeding and you should see a decrease in the snail population (they are self limiting). In the meanwhile, if you have pond, bladder, or ramshorn, just squish and kill them as you see them. Don't bother squishing MTS because their shells are extremely tough.