i have a goldfish and a gold mystery snail, i havent changed the tank for at least a month since i got the snail, should i change the water or not, with the snail in it the water has now been crystal clear, i do add a little water in the tank when it gets low and yes i put the clor-out stuff in the water before adding, thanks to anyone who answers my topic

i would still think you need to clean it. it will keep them healthier.remember fish breath and drink that water

I used to have a gold mystery snail with my gold fish . I'm not sure how the snail died , but i think it might have been the water.