Reef Chemistry Puzzle #4

[Randy Holmes-Farley]

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]

Lime?

 

[MnFish1]

I thought GFO - but not real good evidence.

 

[Miami Reef]

Urchin?

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

My second answer is a human stomach.

 

[Seansea]

Snail?

 

[Raul-7]

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

I'm guessing it's an organism.

 

[EeyoreIsMySpiritAnimal]

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

 

[soreefed]

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]

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

 

[Randy Holmes-Farley]

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]

RO Membrane

 

[EeyoreIsMySpiritAnimal]

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]

CO2 tank?

 

[Randy Holmes-Farley]

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]

Ohhhh. Di Resin! Cation Di resin!!

 

[Reefkeepers Archive]

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?

 

[Raul-7]

Ohhhh. Di Resin! Cation Di resin!!

Cation DI resin is negatively charged. Loves positive ions like Ca++ and hates Cl-.


And needs an acid like HCl with a pH of 1 to recharge it.

 

[Randy Holmes-Farley]

My answer?

Sadly, no. lol

 

[Reefkeepers Archive]

Sadly, no. lol

Better luck next time...

Also, can I have 10 seconds of your time

What does this read?

(this is after me dosing 3 ml daily btw)

 

[Fish Styx]

A calcium reactor.