Go Back   Aquarium Advice - Aquarium Forum Community > Freshwater > Freshwater & Brackish - General Discussion
Click Here to Login

Join Aquarium Advice Today
Thread Tools Search this Thread Display Modes
Please support our sponsors and let them know you heard about them on AquariumAdvice.com
Old 01-31-2005, 09:16 PM   #1
Aquarium Advice Apprentice
Join Date: Nov 2004
Location: ontario, canada
Posts: 31
lowering pH

I've tested my tap water after letting it sit for 12 hours. It is registering at 8.0. I have learned from this forum to lower pH to try adding 'peat' to the filter....Do you mean peat moss that is sold at gardening stores? I've also been advised to try putting wood in the tank (drift wood?) What I have been trying over the last few days is melting snow and slowing adding it to my tank. (the melted snow was registering at 6.5) Any more advice or details will be greatly appreciated, so that I don't have to have my apartment full of snow buckets..

dozer is offline   Reply With Quote
Old 01-31-2005, 09:25 PM   #2
Aquarium Advice Apprentice
Join Date: Jan 2005
Location: Toronto, Canada
Posts: 18
Before attempting to change the pH of aquarium water, you should ask yourself if it is really necessary to do so. The pH range quoted for a given species may be based on its native waters. Although it might be desirable to mimic these conditions to some extent, the fish may be quite capable of thriving at a slightly different pH. It is also worth considering that many fish acquired in the hobby may have been aquarium bred for many generations and already become accustomed to water conditions quite different to their natural habitat. Providing a stable pH is usually more important than the exact value, as long as extremes are avoided.

There are of course some fish which do require specific conditions to thrive. You may also want to alter water chemistry to improve success with breeding, or to improve the growth of demanding plants. Increasing pH is usually easier than lowering it, and will usually involve raising hardness at the same time, in order to keep the pH stable. It can be achieved in the following ways:

1. The use of decor containing buffering salts, such as limestone rock.
2. The use of crushed coral in the filter.
3. Commercial buffers and "pH-up" products.

Lowering pH can be more difficult, particularly in hard water which has a good buffering capacity. The following methods are sometimes employed.

1. Filtration through peat, this will be more effective in water with a lower KH.
2. Commercial "pH-down" products. Again, these will not work effectively where there is a strong buffering capacity. Some will also introduce phosphate to the aquarium which will encourage undesirable algae growth.

Attempting to lower the pH of well-buffered water with commercial chemicals or acid solutions is likely to result in a losing battle, as the buffer system causes the pH to restabilise at its original value. The resultant pH swings are likely to be harmful to fish. The solution is reduce the buffering capacity or carbonate hardness (KH) first.

Apart from the effect of pH itself, there are important effects on the toxicity of ammonia and nitrite with changing pH. Therefore you should be particularly wary of attempting to change pH when either of these waste products is detectable - in particular, during the cycle. It is safer to let the cycle finish before attempting to adjust pH - it may settle at a different value once the cycle is complete in any case.
75 gallon fresh water
76 temprature
Eheim 2215 Filter
1.5 inches of gravel 5 plastic plants and 2 dead corals
Xtremez is offline   Reply With Quote
Old 01-31-2005, 10:11 PM   #3
AA Team Emeritus
TankGirl's Avatar
Join Date: May 2003
Location: Richmond VA
Posts: 8,974
It is absolutely right that you are not going to have an easy time lowering your pH in the presence of a high KH. The most popular and sensible way to deal with this situation, assuming you don't want to raise gorgeous, vibrantly colored Africans in that hard water (or livebearers, for that matter) is to mix your tap water with RO water. You can try various combinations until you get the correct ratio for the desired results.

Check out our articles section for informative reading on pH and the use of RO water.
TankGirl is offline   Reply With Quote

Please support our sponsors and let them know you heard about them on AquariumAdvice.com

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

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 Off
Pingbacks are Off
Refbacks are Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
lowering pH Phoenixphire55 Freshwater & Brackish - General Discussion 7 04-03-2008 06:10 PM
lowering PH aquariumbuff Cichlid Discussion 5 05-11-2007 03:42 PM
lowering PH produceb Saltwater & Reef - Getting Started 13 05-04-2007 11:50 PM
Should i be lowering my pH? elliott_001 Freshwater & Brackish - Planted Tanks 16 01-03-2006 11:35 PM
Lowering the pH? zoe Saltwater & Reef - Getting Started 8 11-12-2002 03:37 PM

» Photo Contest Winners

All times are GMT -4. The time now is 12:40 AM.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2023, vBulletin Solutions, Inc.