Noticed this spot a few days ago, amonnia is 0 or >.25. , nitrite 0, nitrate 0, ph 8.4. I added tetra correct ph and my ph is now 8.1, aiming for 7.5ish(guppies). I have live plants and have been scraping lots of 'hair like' green algea off glass every week. My plants have algea on them slightly, was hopeing lower ph fix my algea problem? Not sure exactly. Upgraded to beamswork led 110v 10000k 5200lumen light 3 weeks ago. Main concern is fish , could it be concted to my algea problem? (Had algea before light uprgrade as well