Reef Chemistry Puzzle #4

Randy Holmes-Farley · Nov 18, 2023

Four clues today:

1. I don't dissolve in water when reefers use me

2. I love calcium

3. I hate chloride

4. My insides are more acidic than anywhere in a fish.

What am I?

Good luck!

Previous Reef Chemistry Puzzle:

Reef Chemistry Puzzle #3

Chemistry Puzzle 3 4 clues today A. Corals love me. I love acropora especially, since they are always looking to take me into their warm embrace. B. I have several nearly identical siblings. Most reefers cannot tell us siblings apart, but I can see the difference. C. Some of my siblings...

www.reef2reef.com

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soreefed · Nov 18, 2023

Lime?

MnFish1 · Nov 18, 2023

I thought GFO - but not real good evidence.

Miami Reef · Nov 18, 2023

Urchin?

Forget it. That was a stupid answer. I’m
so bad at riddles.

My second answer is a human stomach.

Seansea · Nov 18, 2023

Snail?

Raul-7 · Nov 18, 2023

Muriatic acid? That's HCl - how stupid of me.

I'm guessing it's an organism.

EeyoreIsMySpiritAnimal · Nov 18, 2023

Coral. More specifically, the Symbiosome Lumen where Symbiodinium (zooxanthellae) are located.

soreefed · Nov 18, 2023

EeyoreIsMySpiritAnimal said:
Coral. More specifically, the Symbiosome Lumen where Symbiodinium (zooxanthellae) are located.

My first thought was coral but the first hint is “when reefers use me” not sure you could qualify coral as something reefers use.

Reefkeepers Archive · Nov 18, 2023

This is a hard one, a non-water soluble acidic, calcium absorbing medium.... kalkwasser? I have no clue

Randy Holmes-Farley · Nov 18, 2023

soreefed said:
My first thought was coral but the first hint is “when reefers use me” not sure you could qualify coral as something reefers use.

As a hint, that is correct, I would not refer to keeping a coral as being used.

The answer is something reefers buy for a specific purpose other than simply looking at it/growing it.

ptrick21186 · Nov 18, 2023

RO Membrane

EeyoreIsMySpiritAnimal · Nov 18, 2023

Randy Holmes-Farley said:
As a hint, that is correct, I would not refer to keeping a coral as being used.

The answer is something reefers buy for a specific purpose other than simply looking at it/growing it.

Darn. I thought my recent research into corals in acidic environments was paying off

Miami Reef · Nov 18, 2023

CO2 tank?

Randy Holmes-Farley · Nov 18, 2023

At this point I will say that one of the incorrect answers someone gave is typically located physically close (0-2 feet) to the answer I intended.

Miami Reef · Nov 18, 2023

Ohhhh. Di Resin! Cation Di resin!!

Reefkeepers Archive · Nov 18, 2023

Randy Holmes-Farley said:
At this point I will say that one of the incorrect answers someone gave is typically located physically close (0-2 feet) to the answer I intended.

My answer?