Is there a prophylactic for snails that work without damaging the plant? Will it also work for algae? I was thinking CuSO4, but I am not sure how effective or how long I should soak. What about bleach? Thanks.
Why not just get some fish to snack on your snail population? Even if done for only a few days and you return it to your lfs afterwards, it is certainly safer, IMO, than adding copper which will kill your inverts and damage your plants.