I have seen Xenia grow in all dkh ranges. I suppose some colonies do better at certain levels but as long as its stable and within range it should be fine. I have seen it stop pulsing at very low levels though. under 6. which in my opinion its too low for a mixed reef.
Xenia do need iodine in the water so you may want to get an iodine test kit and dose that or look into it and do some research on that.
I have had luck removing it off rocks using a torch! thats right. We took the rock it was on out of the tank and used a propane torch on that area of the rock and it never returned. the torch can be bought at any large store like home depot or walmart for less than 20 bucks.
Hope that helps a bit.
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RG
120 display -40 sump - ATB 840 skimmer - 2x250 MH, 2x54 Actinics, Ice Cap LED moon - Vortecs and Koralias for flow. SPS dominant.
Current Tank Info: 120g tank 40g sump 2x250 watt MHs 2x54 watt actinics ATB 840 skimmer Vortecs and Koralias for flow
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