Hi! I hope this is in the right section. I was wondering if anyone has ever taken algae covered rocks from their pond or that they've grown and put them in their tank for their loaches to feed on. I saw something about people putting rocks in water near windows to purposely grow algae and then putting those in their tank. I have rocks in my Koi pond outside that have green algae on them; is this the same type of algae that the hillstream loaches eat?