T5 to Radion XR15 - what settings?

E.intheC

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I have a 120 gallon reef (4x2x2ft) with some sps toward the top, a few RBTAs, and LPS throughout.

My question is this- I currently have an ATI Powermodule 6 bulb with 4x blue+ and 2 actinic bulbs. I just ordered 2 Radion XR 15 Blues. What intensity percentage should I set them at to roughly match PAR? I don’t have a PAR meter, and have about 2 feet of height above the tank to work with.

Thanks in advance
 

T-J

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Borrow or rent a PAR meter. That's the only way you'll really know. Check with the local reefing clubs. My local one is $10 a year to be a member and they have a free PAR meter for members.
 

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