Kessil

Hello, back to the reef, DSB

I did dsb, removed it due to po4 problem and due to the nature of my talk tank, I almost never vacuum my sand.


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Yep, did the DSB years ago and loved it, mostly coral with small fish load , tank was about as close to maintenance free as I’ve ever had
 
Thick ceramic blocks ?? I’ve been out of reefs for a while,
Haha... that's why i was asking about your goal. If aesthetics then rock on!

But if denitrification than there are alternatives these days. I took a 15 year break before getting back in, and man.. had to learn everything over again.

I use marine pure 8x8x4 blocks, and can't get nitrates up past 1 without dosing. (Dosing nitrates... yup. I said the unthinkable for reefing vets). Other prefer ones by maxspect because they're less brittle. Some say marinepure leaches aluminum but i haven't found it to be the case.

The thinkness creates an anaerobic zone same as DSB... and maybe even more efficent than DSB...
 
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