question of the day ?

reeferkeeper420

Distinguished Member
Joined
May 15, 2013
Location
Ingersoll, Ontario
I would think over a long time yes from water movement, it would probably start erosion? But it would probably take a while.. idont know tho, that is a good question.
 

AdInfinitum

Super Active Member
Joined
Jan 12, 2012
Location
Thorndale, Ontario
The aragonite substrate and a small amount of rock do gradually dissolve as they do the job of buffering the water, but it's years before you have to replenish substrate.

It may be like my once.glorious rockwork creations that gradually settles into more modest but more stable piles.  lol
 

Pistol

Super Active Member
Donor
Joined
Aug 16, 2012
Location
Corunna
It is basically calcium carbonate so if your tank has low ca, alk, and pH then it will be dissolving.
 

shipwreck

Member
Joined
Apr 1, 2011
I have had the same rocks for more then 15 years. They are still the same size. 
If your Ph is low enough to dissolve the rocks then you have serious issues.
 

Pistol

Super Active Member
Donor
Joined
Aug 16, 2012
Location
Corunna
shipwreck link said:
I have had the same rocks for more then 15 years. They are still the same size. 
If your Ph is low enough to dissolve the rocks then you have serious issues.
Not necessarily serious, probably low ca and alk and mag, might need to boost up the params.
 

Boga

Active Member
Joined
Jan 12, 2012
Location
Dorchester, Ontario
Interesting question. The water parameter explanation makes sense, but I never realized that it could be noticeable at a rock level. I observed dead coral skeletons that thinned out (dissolved) in time.

My only major experience was when I bought LR from LFS and it "shrunk" on my way home. :) I will never weight LR again.
 
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