any help greatly appreciated on magnet strength

[Roachbeef19]

Thing this magnet would hold a pump through 1" thick acrylic? I have 2 octo pulse 4 pumps that the magnets are not strong enough. Thinking of getting these rubber coated magnets

 

[dbl]

Let's see what @cromag27 has to offer in the way of an opinion. He sells some nice magnet products also.

Octo Aquatics

www.reef2reef.com