I have been trying to get my TA down to no avail. I adjust my pH to 7.2, which brings the TA down from 130 to 120 and can aerate all day long. Checked it today, pH up to somewhere between 7.5-7.8 (closer to the higher) and TA is back to 130. So I have adjusted it again, and have the bubblers and waterfall/slide running. I have tried this many times over the spring and it doesn't ever seem to get me anywhere. What else can I do to bring the TA down so my pH will quit rising so rapidly?