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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...

Hi All, I've been seeing a lot of discussion about pH in the hobby lately. Unlike many years ago when I started the hobby, there is now a trend to chase pH. Guys like Chris at ACI have been very vocal proponents of pH as a primary driver of coral growth. Clearly, this works for him and his...

For what it's worth: I've been consistently getting 10-14 days out of my scrubber media. I run a BRS scrubber on a Reefer 250 (54g). I'm using the BRS media but plan to switch to the 5g jorgensen jug when I run out. As @Arvin R pointed out, it's a tad under $4 per refill. The way I look at it...

Commenting to follow. I really wish my reefer 250 had an aluminum stand. The leveling feet are another really nice feature.

Following the new tank journal.

The tank looks fantastic, why did you take it down?

Love the wallpaper wrapped stand! I think it looks great.