Collecting Stones - One lowers PH - is it safe? - The Planted Tank Forum
LinkBack Thread Tools Display Modes
post #1 of 5 (permalink) Old 06-21-2013, 03:05 PM Thread Starter
Algae Grower
Join Date: Jun 2013
Location: Costa Rica
Posts: 6
Collecting Stones - One lowers PH - is it safe?

Hi guys, firstable i want to thank this community since i have found a lot of great information to start my new hobby and do it better, i have been reading all the great startup tutorials and whatnot ( i guess this is my introduction )

I started with a non-planted 10 gal tank which served for experiments and now we want to move to a bigger planted thank, but finding all the driftwood and rocks locally (i live in costa rica).

Particularly, one of the initial tests im running to the rocks i have found so far is leaving them under a container with water for two weeks and do PH readings, if the rock leaches calcium into the water is a potential rock that will damage the ecosystem.

That being said, i have this rock that belong to the tradition of the family, it was found by my grand father and is a small "indian filter rock". Its sort of a carbon or something similar with small wholes and a interesting conified shape.

My initial reading two weeks ago was 8.0 ph, the first week lowered to 7.4 and today the last day of the test it read 6.8

So i was under the impression that leaching calcium meant leaching into the water hence increasing the PH, but what about reducing the PH? could this be a good rock for my planted thank?

Thanks in advance

Last edited by damoraso; 06-21-2013 at 03:06 PM. Reason: fixing title
damoraso is offline  
Sponsored Links
post #2 of 5 (permalink) Old 06-21-2013, 06:31 PM
Planted Tank Guru
Kathyy's Avatar
Join Date: Feb 2010
Location: Newbury Park, CA
Posts: 4,182
When I read the title of the thread I was thinking it might be something with metal that acidifies water which is not a good type of rock but if it is porous then it is just like my SafeTSorb substrate which grabs certain molecules out of water until the pores get filled up. Basically like activated carbon. So I suspect it is just fine. Check the water hardness too, bet the KH is dropping as well.
Kathyy is offline  
post #3 of 5 (permalink) Old 06-21-2013, 08:06 PM Thread Starter
Algae Grower
Join Date: Jun 2013
Location: Costa Rica
Posts: 6
great! thanks katthyy!
damoraso is offline  
post #4 of 5 (permalink) Old 06-21-2013, 09:28 PM
Planted Member
Join Date: Feb 2013
Location: santa paula, ca, United States
Posts: 157
If the rock is a tradition, will there be a problem if the rock is damaged by being in the aquarium?
ckraft is offline  
post #5 of 5 (permalink) Old 06-21-2013, 09:37 PM Thread Starter
Algae Grower
Join Date: Jun 2013
Location: Costa Rica
Posts: 6
thats a good point i did not think about before. Although, it was sort of abandoned in one of the houses, i bet its better to get a quorum and ask, hm?
damoraso is offline  

Quick Reply

Register Now

In order to be able to post messages on the The Planted Tank Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:


Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode

Posting Rules  
You may post new threads
You may 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