My PH from tap is 8. (Could be anywhere from 7.8-8.2) I use Seachem Neutral Regulator to keep ph at 7, or so I thought. I’ve been testing the water every day now for over 3 weeks. As soon as I started using it I noticed the tank water immediately stabilize at 7 (the past 2 days it has been up to 7.2) Admittedly I never tested the treated water before putting it into the tank. I’ve only been testing the tank water lately. I’ve noticed after I do a water change the guppies lose a bit of color temporarily & are more active swimming around the tank erratically. That led me to test the water before putting it in the tank. After putting the Neutral Regulator in the PH is at 7.4. Could this be enough of a difference to cause distress? All other parameters are good. Zero ammonia & nitrite. I do water changes at 20ppm or sooner. I use Prime with water changes & because I am currently medicating have also been adding either a capful Seachem Stability or Tetra SafeStart about 6-12hours after dozing meds. (Today is last day of meds.) I should mention this has been an ongoing issue for a month. I tried crushed coral but it kept the ph too high. My water is already at 10 drops of GH & 4 drops of KH (I don’t remember the conversion.) I have used baking soda in the past but learned the hard way the effects of fluctuating PH. I thought the issue was solved with the Neutral Regulator & the guppies seem to thrive at 7-7.2 ph. (That’s what the stores I bought them from kept them at too.) Is there something I’m missing? How do I keep the PH stable? Or is it ok that once water is in the tank it stays at 7-7.2?