Originally Posted by packfan2204
so u can have too high a flow in ur tank, because i've done a lot of water changes in the past two weeks, and still can't get my pH down. And i knew when ur pH is low, u don't have enough flow, and i was wondering if the opposite is true, if u have too much flow, ur pH will go too high. Cause i can't for the life of me figure out how to get my pH down.
Actually there is only so much O2
the water will hold so once that point is reached, no amount of water flow will increase the gas exchange and allow such an increase in the ph
without some sort of chemical addition. The constant water changes however will spike the ph
somewhat. Stop doing them for the time being and allow the chemistry to settle on it's own. Test the ph
tomorrow in the AM, at midday and later in the evening to see what you get. Also note that testing the ph
within several hours of buffer additions or water changes will greatly affect your readings (higher). The sample water that is removed from the tank must also be tested within minutes of removing from the tank. Any amount of ambient O2
will affect the reading as well so do not dally with the test.
Check your source water (RO
?) to see what the reading is there. Might be an issue with the test being accurate.