Hi all,We need to eradicate and guard against little house moths unfortunately and I am a little concerned because in the back of my mind I have it that mothballs can cause problems with fishtanks.Is this only if you have an air pump running, or would the mothballs be likely to affect the tank regardless ? My tank is covered with a lid most of the time (with the usual 4cm square holes at the back to allow pipework etc). I do sometimes have the flaps up with a house fan running to help with temperature during the hottest days (thats a laugh!).The ones I have are lavender scented and are meant to be left within their wrappers when strategically placed under the bed and in the wardrobe.Anyone who knows about this, I would be very grateful.CheersChris