Yeah two of these on a 75 will cover everybit of the tank, I had two on my 4x2x2 120g about 9" above the waterline and it covered everywhere. I now have one over my 75g 24x30x24 and still get great coverage.
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75g 24x30x24 w/external overflow
35 sump/fuge
250w Ice Cap MH with Radium 20k & Luminarc Reflector
PS4 Return -PCI Chiller - WavySea
2 x Tunze 6101
H&S A150-2001
2 x Deltec Reactors Carbon/Phosban
Profilux Plus II
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