74 gallon rimless tower...

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I am running one hydra 26hd...I have my blues at about 75% white at about 35 and others around 10-15...

I am about to add a second 26hd for more even coverage.. would I need to lower the totals for both lights by a percentage? Or run acclimation mode or what?
 
I did. I run mine at 18-20k. With one I ran it at 100%. When I got the second 26HD, I started at 40% and did a weekly increase of 5%. At 70% thinga went bad. My anemone closed up and one ofor my sps corals tips turned white, still is. I'm sitting at 60% and will probably stay there.
 
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Yea I think I'm gonna turn em down at least 25% or so... and see how that does... the light will move directly over some corals as where it now is off to the side
 
Got the twin hydra HDs going... coverage looks nice... as things grow in that second hydra is gonna be important I think..

turned them down some and will keep any eye on things...

461b655b8ab7cc924b1967ac0b68b316.jpg
 
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Added a few new pieces.. some macros on the top rock, gorgonians, couple others... filling up fast...

f4f006db88e7c7b533dde3ad696d4a33.jpg
 
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