mag float

I leave mine in.
 
i had a mag float imitation on a smaller tank (10 gallon) for a while and i hated it. the portion that is in the tank didn't float, so whenever the connection was broken between inside and outside piece i had to get my arm all wet retrieving the inside piece. not sure if this was a walmart brand one (i had gotten it used with a tank purchase) but it was white with a curved blue handle area.

spend the extra few bucks and get a real mag float.
 
i had a mag float imitation on a smaller tank (10 gallon) for a while and i hated it. the portion that is in the tank didn't float, so whenever the connection was broken between inside and outside piece i had to get my arm all wet retrieving the inside piece. not sure if this was a walmart brand one (i had gotten it used with a tank purchase) but it was white with a curved blue handle area.

spend the extra few bucks and get a real mag float.
That would happen to me in the beginning having a heavy hand and a weak cheap small size mag I got free with my first CL tank. Then one of my later CL tank buys came with a super size mag cleaner and it is so strong I have a hard time pulling them apart and almost never separate underwater even with microfiber cloth sandwiched in-between. Now when the water-side mag flies off from pushing to hard all I have to do is stay with the falling section and it comes right back to the glass before it hits bottom, and I just use a string on the dry side magnet to fish out the other if it does get away and go to bottom as my clone mags do not float either.
 
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