The friendliest place on the web for anyone with an interest in aquariums or fish keeping!
If you have answers, please help by responding to the unanswered posts.
The best, natural glass cleaner is the brown or red variety of "Ramshorn" snail. However, the best magnet cleaner is "MAG-FLOAT". I used it for some time until I got the word on the snails a few years ago.
If you're interested in one slightly used. Let me know, and I'll send it to you. I used to use it in my 45 G tall.