MICROBE-LIFT BSDT16 Broad Spectrum Disease Treatment for Ponds and Outdoor Water Garden, Safe for Live Koi Fish, Goldfish, Plants, and Decor, 16 Fl Oz

Can you confirm if it's this one? https://www.amazon.com/Eco-Labs-BSDTGAL-Spectrum-Treatment/dp/B003UY66II?th=1 Should I just dose the entire pond? The rest of the fish are swimming fine, but the other bigger koi is just sitting in place and not eating. I have methylene blue and IchX, if those help.