PH drop - The Planted Tank Forum
Reply
 
LinkBack Thread Tools Display Modes
post #1 of 25 (permalink) Old 11-02-2005, 02:12 PM Thread Starter
Planted Tank Obsessed
 
soundtweakers's Avatar
 
PTrader: (3/100%)
Join Date: Oct 2005
Location: New York, NY
Posts: 340
PH drop

Anybody ever deal with this phenomenon? After my most recent weekly 30% water change(dechlorinated water of course), my PH dropped from 6.6(average PH in my tank) to below the chart(definitely below 6.0) after one day. My flying foxes are all fungused up ...again.... my last two survivors might not survive. Anyone has any idea what I should do?? please help.

55 gallon long 3 yrs old tank
Amazon sword forest
one big chunk of driftwood(in the tank for 6 month)
gold fish, corys, oto cats, dying flying foxes
78F-80F
soundtweakers is offline  
Sponsored Links
Advertisement
 
post #2 of 25 (permalink) Old 11-02-2005, 03:21 PM
Planted Tank Obsessed
 
Tino's Avatar
 
PTrader: (0/0%)
Join Date: Jan 2005
Location: California
Posts: 355
What's your PH/KH out of the tap? Do you inject CO2?
Driftwood is also known to acidify the water.
Tino is offline  
post #3 of 25 (permalink) Old 11-02-2005, 05:29 PM
Wannabe Guru
 
Spar's Avatar
 
PTrader: (3/100%)
Join Date: Aug 2003
Location: Dallas
Posts: 1,018
As Tino said, post what your KH is. Sounds like your alkalinity (KH) is extremely low causing a pH crash pretty quickly after a water change. Easy to fix, but good to know.

Cliff
450g Planted Discus Tank - Work in Process!
Spar is offline  
 
post #4 of 25 (permalink) Old 11-02-2005, 08:07 PM Thread Starter
Planted Tank Obsessed
 
soundtweakers's Avatar
 
PTrader: (3/100%)
Join Date: Oct 2005
Location: New York, NY
Posts: 340
PH from my tap is at 7.0 all the time, I don't use any salt, or should I start using them?? The weird thing is that I always do my 30% change every week and this is only the second time in eight month my PH dropped like that. I do not have a KH testing kit, should I get one. As for my driftwood, it did cause my PH to drop when I first put it into the tank and that was six month ago.
I'm planning on adding home made CO2 this weekend.

thanks so much for the help
soundtweakers is offline  
post #5 of 25 (permalink) Old 11-03-2005, 01:20 AM
Planted Tank Guru
 
Rex Grigg's Avatar
 
PTrader: (65/100%)
Join Date: Dec 2002
Location: Portland Orygun
Posts: 9,600
Stop!!!!!

Do Not Add Co2.

First thing. Get a kH test kit.

Second read and understand how the kH/pH/CO2 relationship works.

Adding CO2 to a tank with little or no kH is stupid at best.

You need to test your tap water pH AFTER it has set out for at least 12 hours. 24 hours is better.
Rex Grigg is offline  
post #6 of 25 (permalink) Old 11-03-2005, 08:11 PM Thread Starter
Planted Tank Obsessed
 
soundtweakers's Avatar
 
PTrader: (3/100%)
Join Date: Oct 2005
Location: New York, NY
Posts: 340
CO2 is now on hold, thanks for the warning!!
will test KH before anything is done.
soundtweakers is offline  
post #7 of 25 (permalink) Old 11-04-2005, 01:43 AM
Wannabe Guru
 
Spar's Avatar
 
PTrader: (3/100%)
Join Date: Aug 2003
Location: Dallas
Posts: 1,018
seeing that you have 7.0 pH tap water, means that you have around 1 dKH water. A safe KH is generally around 3 dKH.

To raise it, add 1t (TEAspoon) of baking soda per 50g's to raise KH by 1d.

You may want to raise it 1 dKH per day over a 2 day period so that your fish don't stress from it. Although 2d really doesnt matter.

Make sure to test KH first anyway to confirm that the 1 dKH is actually true. I bet it is though.

After that, start adding your co2, and low pH really won't matter to the fish anymore as the alkalinity (KH) will be consistent.

Cliff
450g Planted Discus Tank - Work in Process!
Spar is offline  
post #8 of 25 (permalink) Old 11-04-2005, 05:25 PM Thread Starter
Planted Tank Obsessed
 
soundtweakers's Avatar
 
PTrader: (3/100%)
Join Date: Oct 2005
Location: New York, NY
Posts: 340
Thanks for the advice.
I'm going to check the KH tonight and see if I need to add the baking soda,
also, supposely I add the baking soda and raise KH to 3 dKH, what's going to happen then, would the PH rise along with the KH, or I should still add some salt to the tank. I know the CO2 will also bring down the PH, and my PH is pretty low to start with. just scooped up my most recent casualty, I no longer have any more flying foxes.

thanks for the help
soundtweakers is offline  
post #9 of 25 (permalink) Old 11-04-2005, 05:39 PM
Wannabe Guru
 
Spar's Avatar
 
PTrader: (3/100%)
Join Date: Aug 2003
Location: Dallas
Posts: 1,018
there is a direct relationship between pH and KH, so yes, the pH will rise as well.

pH is made up of 2 components, Acids (indirect relationship) and KH (direct relationship). Fish only react to changes in KH, so any changes due to Acids is incidental to the fish health (to the extent that you dont overdose; i.e. too much co2 will sufficate the fish). And small changes in KH, regardless of how it affects pH, will also not affect the fish health. So if you raise KH by 2d over a 2 day period, there is no need to get stressed about impact on pH and start adding salts, etc, to aid in fish stress relief.

Keep us updated!

Cliff
450g Planted Discus Tank - Work in Process!
Spar is offline  
post #10 of 25 (permalink) Old 11-04-2005, 09:32 PM Thread Starter
Planted Tank Obsessed
 
soundtweakers's Avatar
 
PTrader: (3/100%)
Join Date: Oct 2005
Location: New York, NY
Posts: 340
Thank you very much spar
I got myself the KH test kit and will test the water tonight,
thanks for all the help.

billy
soundtweakers is offline  
post #11 of 25 (permalink) Old 11-05-2005, 04:11 PM Thread Starter
Planted Tank Obsessed
 
soundtweakers's Avatar
 
PTrader: (3/100%)
Join Date: Oct 2005
Location: New York, NY
Posts: 340
baking soda worked like a charm

dear spar, I have added 1 teaspoon of baking soda into my PH 6.0 tank, and within a few hours(precisely the length of Starwars Episode III). The PH rose up to 6.6 and all fish seems fine. Thank you for the trick, now I'm going to start adding CO2 to the tank. any advise on how to plant "cabambas" so it won't be uprooted by my goldfish??

Billy
soundtweakers is offline  
post #12 of 25 (permalink) Old 11-06-2005, 09:10 AM
Guest
 
PTrader: (0/0%)
Join Date: Nov 2005
Posts: 13
Try anchoring it with a some lead
Sleepy_lancs is offline  
post #13 of 25 (permalink) Old 11-06-2005, 12:35 PM
Wannabe Guru
 
Spar's Avatar
 
PTrader: (3/100%)
Join Date: Aug 2003
Location: Dallas
Posts: 1,018
Have you used these:
http://www.bigalsonline.com/catalog/...d1=3349;pcid2=

Should have them at a LFS as well.

Cliff
450g Planted Discus Tank - Work in Process!
Spar is offline  
post #14 of 25 (permalink) Old 11-08-2005, 07:18 PM Thread Starter
Planted Tank Obsessed
 
soundtweakers's Avatar
 
PTrader: (3/100%)
Join Date: Oct 2005
Location: New York, NY
Posts: 340
thanks, always had doubts about adding metal to the tank, but guess it's okay.
soundtweakers is offline  
post #15 of 25 (permalink) Old 11-08-2005, 07:55 PM
Wannabe Guru
 
shalu's Avatar
 
PTrader: (1/100%)
Join Date: Jan 2003
Location: San Jose, CA
Posts: 1,675
Quote:
Originally Posted by Spar
Have you used these:
http://www.bigalsonline.com/catalog/...d1=3349;pcid2=

Should have them at a LFS as well.
Those particular ones are my favorites, heavy enough to hold down the big stems. I tried to get some more in my last BigAls order, but they were out of stock


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Flourite, wet/dry, AHSupply 302w PC, PinPoint controller

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
15w T6+15w T8

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
40w T6 ODNO4x, no CO2. Discus grow out.
10gallon Tonina tank, 2x15w T6 ODNO 4x
---------------------
I will do aquascapes after I collect all the plant species and grow them to perfection.
shalu is offline  
Reply

Tags
None

Quick Reply
Message:
Options

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

Password:


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

Email Address:
OR

Log-in










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