FIlteration on a 100 gallon tank

Question
Just moved my fish from my 75 to 100 6 foot long 100
gallon, (hope my Hippo Tang survives the move, it stresses
her so). Anyway, I moved my 2 HOT magnums to this tank. I
really do not want to get into running a sump, really don't
like regular canisters,  and I was going to run my emperor
400. I really do not like the Emperor because when the
water level drops it get so noisy. I would rather over
filter than under. I do not really know what size tank the
HOT magnums were built for? Would 3 HOT magnums be enough
for this tank? One more question. Is a class or acrylic top
necessary, I know that it holds in heat and fish, but my
husband custom built my stand and hood, I found some
sliding screens for windows in PVC frame with screen door
screen in them that would do the job for keeping in the
fish. Is it better to use the acrylic or glass or would the
screen work do the job?

Answer
Hi Debbie. Good luck on your move I hope everything does well! Three hot magnums would be enough for this tank but how can you like them more then the emperor? Having to shut down a filter, take it apart to clean and then put it all back together seems like a horrible waste of time. The emperor all you have to do is remove the filter pads and put new ones in. If these are the filters you like then go with them. In my opinion I can't stand to use them! anyway it is better to over filter than under filter and the addition of a third filter, whatever your preference may be, would be a good idea.( i am just kidding with you always go with the filters that you would feel the most comfortable using)
As for the screen top, if it is made of any kind of metal then absolutely do not use it! Only nylon screening can be used over a saltwater tank. metal will corrode and eventually dissolve possibly tainting the tank water. Never use metal of any kind in, on, over or around a saltwater tank. If it is a nylon screen then that would be fine as long as your light system is not sitting right on top of it where it has the possibility of melting the nylon or getting a build up of salt creep near or on the tubes. This is a huge fire hazard and no lighting should ever be used over an open tank unless it is rated to do so or is far enough away from the water surface that there is no chance of it getting splashed or salt creep forming on it.