LF SUPER strong cleaning magnet
 

My glass is 19 mil thick....and really not into paying LFS prices. Id rather spend my dough on coral.

I bought the tiger shark magnet. Comes with replaceable pads. About $120.00. Well worth it. My tank is 15mm and i can hold the one side about 4" off the glass and the inside still stays. I thought it was pricey but works so nice I feel it was well worth it