I was watching a KoiPartner video, and he said foam is caused by your koi not being able to digest the proteins you feed. He said too much feeding can cause it too. Are these the only 2 ways foam can develop in your pond? Will any water conditioning additives cause foam also??
Recently I was feeding a small amount of hikari wheat germ about 2 or 3 times a week when the water temperature was about 50 to 52 F. My pond developed a noticeable amount of foam with a small amount of yellowish foam mixed in…