I have both my 250 watt pfos in my stand one is probably 6 inches from my sump, it been like that for about 2 years, i have had no problems. The PFO ballast are built well IMO, and i can easily put my hand on the ballast any time they are running and leave it there.
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"120 Gallon - Fastest Build in the West"
20Gal Sump, 2x 250 PFO Metal Hallides running 2 20k XM Bulbs, 2X54 HOT5 1 KZ Coral Light 1 Fiji Purple, Euroreef RS 100 Skimmer, Quiet One 6000 Return Pump, 2X Tunze 6025, Nano Wavebox ~To Live Is To Reef~
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