For the longest time I've had enough LR to only stack up about 60% of the way up my 150; that's 60% of the way up in the middle, 25-30% on the sides. Now I'm planning on getting more LR to make room for SPS by stacking higher. How high should I go?

It occurred to me that when I do water changes, as it is, I drain the tank down to where a big plate coral that sits directly in the middle and sticks up gets slightly exposed. So I thought, how does someone with LR and large amounts of coral that sit high in their tank do a water change without exposing a bunch of the coral to air? What are your experiences? Curious and just thinking ahead, thanks...