I don’t know what happened to mag floats. I used them for like 20 years on my freshwater tanks, but now they are scratching my saltwater tanks. I even bought new ones and they still do it. Tried a small and a large. I’m very careful as I hate scratches so I check multiple times to make sure I’m not dragging sand when I clean. I stay away from the sand. The scratches happen towards the top or middle.
I figure it might be caused by very tiny spirobid worm shells that are almost invisible, or the mag float material is too harsh.
In any case, this needs to stop. What are your tips to avoid scratching ? Any particular product better than the rest ?
Thanks !
I figure it might be caused by very tiny spirobid worm shells that are almost invisible, or the mag float material is too harsh.
In any case, this needs to stop. What are your tips to avoid scratching ? Any particular product better than the rest ?
Thanks !


