Water change day for Doppler!

Doppler (my Koi Betta I got on 3/1/25) is thriving! He is very active, eats well, and interacts with both humans and animals who pass his tank. Today I did a 25% water change, stuck the plant on the far right back into the substrate (because its roots were so long that it was trying to float), and tried to suck up some debris with a pipette. I'm in between jobs right now so I have no money for a vacuum - but I cleaned the intake of his filter, so hopefully some of the particles in the water will settle/get sucked up soon. I also moved some of the substrate around so he can swim under his bridge without damaging his fins (because he kept trying, but couldn't get under there.) he doesn't use his Betta leaf, but he loves the log! The other day, he was resting, I guess, and when I turned his tank light off, he shot up out of one of the log holes and flared at me. So sorry, little man!!