Cheers 4 that.Ch4rlie said:Quickly looked up the Tetra website, a quick search cam up with their hotline for Tetra Equipment Support Centre
Number for UK - 01634 756 023
https/www.tetra-service.net/tetra/go/8B7E6E45219BFB922F49AFABA2AB8C04/?lang_id=2
Hope that helps and hopefully is a current number. Let us know if this works.
You could also post a question on this thread about what your problem is with your TetraTec filter, quite a few members have this filter so they may be able to give advice.