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Sure, happy to give you one.

7.5L of saturated Kalk per day… wow! Does your evap rate allow for that much? How much did that raise your Alk?

Here is a link to the paper. From my interpretation (and I could be wrong), it does seem like they are referencing DO in the water, not the coral tissue. And to be clear, I do not have a horse in this race! Only looking for thoughtful discussion with the experienced keepers on this forum like...

Yeah the eagles are a scary opponent. Much more than any team on the AFC side, imo. Should be another good game...

Mmmm chili looks bomb. Stoked for the 9ers win!

I think I see your point here, in a skimmer based system, excess DO in the water column will equilibrate with the air being pumped in, hence why we shouldn't see hyperoxic conditions?

What's interesting is that a reference from this paper claims: "coral reef waters during daytime is always accompanied by hyperoxia" They measure DO between 27% (1.67 mg/L) to 241% (14.19 mg/L) over a full day-night cycle on the coral reef. Of course, our aquariums are not direct analogs...

This is exactly the kind of thing I'm wondering about. I suspect photosynthesis is the primary producer of DO in our aquariums, and fish do consume some DO. Perhaps a fish-heavy system lightly stocked with corals and other photosynthetic organisms will have more 'normal' DO levels yielding a...

I've got some bird of paradise seriatopora (on DBTC) that grows really quickly under the right conditions. Happy to give you a frag if you'd like.

How high is your nitrate? I just see the timer countdown on the hanna checker :)

@Matt_Wandell, I recently posted a thread about pH/DO and coral calcification rates (link). The authors of this study found that in addition to pH, DO plays a major role in calcification (measured in lab grown A. Millepora). While raising pH increased calcification rates under normoxia...

Today I noticed some sponges in the cryptic zones of my sump: I think these are pretty neat, and a sign that my tank is maturing. Almost at the 1 year mark... Did some maintenance on my algae turf scrubber. This is an air driven unit from Santa Monica: I probably could go longer before...

Stunner of a tank, I'll have to come visit your restaurant sometime...

I just added Bird of Paradise Seriatopora to DBTC. Easy SPS. Pickup in San Jose. Standard rules + must have a tank journal. There are 3 frag(s) available right now. This thread was automatically created by BARcode

Dude, tank is way too small for that stock. Give it back to the LFS or get a larger tank. Joking aside, tank looks great. Glad you got it in place.

Ironic for a pump with that name...

I was surprised to learn dark calcification is even a thing. I assumed that calcification was directly tied to photosynthesis happening in the zooxanthellae.

Yeah for sure. I personally think part of what makes this hobby fun is having stuff to chase and seeing results (good or bad!) :) I'm curious to see how my O2 and pH numbers compare to what the authors found for best daytime calcification rate: pH 8.4 and O2 100% (6 mg/L). I know my pH runs...

I didn't consider that slower mixing was an indication of impurities in the salt mix. Good to know...

Thanks for posting this. I'm planning on switching from Reef Crystals to Red Sea (not Pro). Reef crystals mixes to a really high 11 dKH. I'd rather start with something lower, and dose it up to where I run my tank (around 9.5). I've used Red Sea Pro in the past, and seem to recall it mixed...