Thanks robster. My male onyx is always shaking a sputtering around the female but no spawning here.
I use the same auto topoff. It has worked flawlessly for the past year. I have it triggering the RO/DI unit in my bathroom. The output of the RO goes into a kalk reactor which in turn goes into my sump. So every night I am topping off with kalk. My calcium, pH and alk levels have all been fine. I do manually add Reef Complete.
I had a bad thing happen yesterday and didn't realize it till just a few minutes ago. I did a water change yesterday and used kalk water from the reactor for the water mix

. I have a bypass on my reactor that I use when I need fresh water and I forgot to switch it, so all 10 gals of water that I mixed was dosed with kalk! This morning when I looked at the pinpoint it said 9.0, ouch! After searching around the RC lists I found a solution, white vinegar. I slowly added 30ml to my sump and like magic, my pH came down to 8.5. I'm thinking that is good enough for now and will just use freshwater for a few days to bring it down the rest of the way.
Btw, ordered a Reeflux 250w 10k bulb today. Reports look pretty good on it. I am a big fab of blue so I will probably add some actinics also, any thoughts on bulbs? I was thinking a pair of 28w PC's would work. I may be needing that hood sooner rather then later.
That looks like a great tank, love those cubes!