Strictly just my thought process for making expensive purchases. On a 125G tank Measuring 72”L x 28’ H x16” D Would a total of three be needed? That cost would be for the Radion XR30w G2 549.00 x 3 = $1647.00 + $181.00 tax Total $1828.00 I would imagine free shipping paying that much. Add to that two Vortech Mp40’s at $930.00 with the wireless capability built in. I’m assuming this will eliminate the real need (or want) to own a $524 Neptune controller. It will also eliminate the cost of bulb replacements. Lets say 250W MH x 3 to be changed every 9- 12 months or less at roughly anywhere from $50 to $120 x 3 max that’s roughly $360 or more a year when you include tax and shipping. Plus the electric bill from running the lights and the need of an $800.00 chiller I know from experience that removing MH from the mix getting a lower wattage pump and even though I got very Inexpensive LED’s my bill dropped about $20 dollars a month. My chiller was always running a fan to remove chiller heat and a higher wattage pump replaced. Would you be able to run a USB cable from the lights to lets say a Apple Time capsule and eliminate the need for the reef link? If you could that would eliminate the $200.00 dollar cost for that. They are supposed to last about 50,000 hours is the normal assumption. So math wise…… Radions XR30w G2 x 3 $1828.00 Vortech Mp40’s x 2 $960.00 Rail Kit for Mounting Lights $75.00 Possible need for Reeflink $200.00 Supposed to last you Maintenance free hopefully for 15 years. Grand Total= $3063.00 The old way cost break down MH Bulb replacements 15 years $5400.00 based on 12 month bulb replacement even more if you followed the 9 month rule. I would image 6 to 8 T5’s would be about half the cost as the MH’s. $20.00 a month electric x 12 months 240 per year that's based solely on my experience. That’s about $3600 in 15 years in just electric. WoW! Add the controller, chiller, fans, etc to that....... hmmmm This hobby is expensive. That’s about $9000.00 after 15 years. So you save about $6000.00 over the 15 years. by switching to LED’s hmmmm. I’m trying to talk myself into upgrading my lights to Radions. I guess by the end of 2014 something better will reduce the prices a bit. Like flat screen Tv’s.