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#1 |
Registered Member
Join Date: Mar 2016
Location: Huntington Beach
Posts: 110
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What would cause brittle rocks?
I have Marco rocks that have been in my system for 2-3 years but over the past year they seem to have become super brittle like I can break pieces off and scrape layers off them only change is I started running my ca reactor again but ph of the tank is the same as before when I was dosing. Any ideas?
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#2 |
Registered Member
Join Date: Mar 2016
Location: Huntington Beach
Posts: 110
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Anyone?
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#3 |
Registered Member
![]() Join Date: Jul 2010
Location: Austin, TX
Posts: 1,586
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Endoliths are going to be dissolving any calcium carbonate substrate even at the high pH many of us keep our systems.
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"Our crystal clear aquaria come nowhere close to the nutrient loads that swirl around natural reefs" Charles Delbeek |
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#4 |
Registered Member
Join Date: Nov 2014
Location: Kenosha, WI
Posts: 631
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I’ve read Marco rocks cause brittle rocks. Number one complaint I read about those rocks from day one when people bought them.
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#5 |
Registered Member
Join Date: Aug 2001
Location: California
Posts: 2,125
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How did you cure and/or start the cycle? I've read a few places that acid or bleach baths will remove rock. Pukani comes to mind.
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-saf1 Current Tank Info: 40 breeder w/LEDs (Upgrade in progress. 30" H x 54" W x 30" D 240 or so gallons) |
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#6 |
Dogmatic Dinosaur
![]() Join Date: Feb 2004
Location: Boulder, CO
Posts: 6,181
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It is probably the composition of the rock from where they were terrestrially collected.
Super low PH can also make rock brittle, but we are talking about in the 6.X range. |
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#7 |
Registered Member
Join Date: Mar 2016
Location: Huntington Beach
Posts: 110
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Tank runs at 8.1-8.3
No acid baths or anything like that |
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