The Planted Tank Forum - View Single Post - Concerns/questions about rising pH
View Single Post
post #2 of (permalink) Old 11-24-2012, 04:02 AM
Darkblade48's Avatar
Join Date: Jan 2008
Location: Toronto/Singapore
Posts: 9,871
Calcium (probably in the form of calcium carbonate?) would cause the pH to rise. Other things (substrate, rocks, decor, etc) could be leeching out to cause your pH to rise as well.

Another factor to consider is that while your tap water might be 8.2 straight out of the tap, there is some dissolved CO2 in it, which would slightly lower the pH. If you let the CO2 off gas (just let the water sit for a day), you would probably see the pH go up slightly.

As for decreasing the pH slightly, you can try mixing in a bit more RO/DI water.


A Primer to Pressurized CO2 and A Primer to Planted Tanks
Eheim Pimp #362 - Eheim 2213 x2, Eheim 2028, Eheim 2217, Eheim surface skimmer and Eheim autofeeder.
Victor Pimp #33 - HPT272-125-350-4M
Darkblade48 is offline  
For the best viewing experience please update your browser to Google Chrome