OC, thanks, I will build a wood screen to separate the tank and radiator.
FINAL NOTE I ordered a new 150 gallon from GlassCages. It will arrive 12/28/2013. I purchased 2X29 gallon tanks at a good price, not $1/gallon, to put my fish in for the 1-2 days it will take for me to remove everything from my tank, particually 150-200 lbs. of gravel. Then I will cut my tank apart int 5 sheets of glass so I can place the new tank on the stand and have to pay to remove my old tank. NOTE: My last 150 gallon had braces all along the top or the tank and a crossbrace so I could only use 2 HOB filters on the left rear. This tank will have 2 crossbraces and I will be able to hang an HOB in both the left and right rear. I am not sure if I will get 3 glass covers or if the center panel between the braces will be a solid sheet.