I have just seen that there is a slight leak in the aquarium, where can I get some sealant from, is is something that the local pet shop sells, which sell fish or is it a mail order job. Any thoughts welcome!

you should be able to get it at any aquarium shop - do not be tempted to use normal selant though

Hello Telandy

I have aquarium tank sealant with me and would of course be glad to give it to you free. I will be in Zurich in about 4 - 5 weeks (Zurich). If you have not found anything by then let me know.

I have to leave my fish tank behind, unfortunately.

As rob1 suggested DO NOT USE normal sealant under any case.