Lave rocks - Tropical Fish Keeping - Aquarium fish care and resources
 
LinkBack Thread Tools
post #1 of 7 Old 03-13-2012, 11:17 PM Thread Starter
Member
 
Egrant's Avatar
 
Lave rocks

Hey guys, yes another rock question (well 2)
I read the post it about not boiling rocks and I am not going to try. I did get tired of reading everyone try to argue the fact so onto my questions. I bought some smooth river rocks from the landscaper. RINSED thoroughly with a hose and have them soaking in water, and I plan on re-rinsing tomorrow. Once scrubbed with hot water they should be good to go right?
Also, they had a bunch of lava rock that would be cool because of the misc shapes and itís lite. Can I use this? It looked a little dirty so I stayed away but might add some if itís ok.
Egrant is offline  
Sponsored Links
Advertisement
 
post #2 of 7 Old 03-14-2012, 07:36 AM
Member
 
beetlebz's Avatar
 
I would think so. Ive heard of lava rock that wasnt aquarium safe, but ive never seen it. I would just make sure that its clean, I like to pour boiling water over anything I put in my tanks, but even thats probably silly.

the other rocks I would think will be fine, as long as they are clean and arent going to alter the ph (vinegar test).

Dedicated, converted, lowes / home depot bulb buyer!
beetlebz is offline  
post #3 of 7 Old 03-14-2012, 09:33 AM Thread Starter
Member
 
Egrant's Avatar
 
Does the vinegar test just simply fuzz or not once pored on rock??????

Fuzz = no good
No Fuzz - Good
Egrant is offline  
post #4 of 7 Old 03-14-2012, 10:11 AM
Member
 
willow's Avatar
 
no fuzz is good.

when you set up a new tank,hide an extra
sponge or two behind some decor,that way you have
something seeded for you next filter.
willow is offline  
post #5 of 7 Old 03-14-2012, 11:48 AM
Member
 
Byron's Avatar
 
I just posted in response to your [Egrant] similar question in the other thread, but will repeat and expand a bit here, since you've also raised some other issues.

First on lava rock, I have read that this is calcareous. Calcareous means the rock is composed of minerals like calcium and magnesium which will slowly enter the water, raising the mineral content and thus making the water harder. This may or may not be what you want, depending upon the fish species. The issue with rock is basically the hardness factor with fish.

Some fish need medium hard or harder water; livebearers, rift lake cichlids, and a few others fall into this group. For tanks with these fish, calcareous rock would not normally be a problem, and depending upon the hardness of the source water, may be an advantage. Using gravel or sand made from calcareous rock is usually an advantage.

Many fish are soft water in origin, and while it varies from species to species as to how much hardness they can tolerate, the aim in all aquaria with soft water fish is to keep the water soft, so using rock that is calcareous is not normally advisable. However, if the water is very soft (near-zero hardness), having some calcareous rock is not necessarily a problem as it may help. This is very general, but sufficient for this discussion at this point.

So back to the lava rock, if this is the brownish/reddish porous rock, I believe it is calcareous. The vinegar test may show this if it fizzes; vinegar is a fairly weak acid so if it does not fizz, I would go to a stronger acid. The Regent #2 in the API nitrate test kit works for this, a couple drops on the rock.

River rock is usually inert (= does not affect water chemistry). I have several pebbles of varying sizes of this in some of my tanks, and I bought it from a local landscape/rock supply. The acid test can still be used to make sure.

Byron.

Byron Hosking, BMus, MA
Vancouver, BC, Canada

The aquarist is one who must learn the ways of the biologist, the chemist, and the veterinarian. [unknown source]

Something we all need to remember: The fish you've acquired was quite happy not being owned by you, minding its own business. If youíre going to take it under your wing then youíre responsible for it. Every aspect of its life is under your control, from water quality and temperature to swimming space. [Nathan Hill in PFK]
Byron is offline  
The Following User Says Thank You to Byron For This Useful Post:
Egrant (03-15-2012)
post #6 of 7 Old 03-15-2012, 01:11 AM
Member
 
1077's Avatar
 
Agree with all of the above ,and would only add that lava rock is rough on skin of some fishes such as loaches,plecos, some catfishes that like to work over the rocks while searching for food and tiny aquatic creatures.
They can scrape their bellies,barbels, on the lava rock, and secondary infections can occur.
I would have no problems using it with cichlids but not perhaps with loaches,plecos,catfishes.

The most important medication in your fish medicine cabinet is.. Clean water.
1077 is offline  
post #7 of 7 Old 03-15-2012, 10:22 AM
Member
 
beetlebz's Avatar
 
I would think that natural lava rock can and will (this is only theory) have different compositions. I have to believe that the effect on ph or dgh, would be almost completely dependent on what it was made of. Especially the odd colored stuff.

Dedicated, converted, lowes / home depot bulb buyer!
beetlebz is offline  
Reply

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Similar Threads
Thread Thread Starter Forum Replies Last Post
Help with these rocks?? aaronjunited Beginner Freshwater Aquarium 2 02-13-2011 03:01 PM
Rocks brancasterr Beginner Freshwater Aquarium 2 01-26-2011 02:50 AM
rocks jbonez Beginner Freshwater Aquarium 4 01-09-2011 01:17 PM
Rocks!!! Holly Beginner Freshwater Aquarium 3 02-03-2008 09:10 PM
Rocks okay? TrashmanNYC Beginner Freshwater Aquarium 2 12-10-2007 02:32 AM

Posting Rules  
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome