Good ideas, Malak. I need to add the beneficial bacteria again today. But, the only local pond I know of close by is my farm pond, and it is anything but clear. LOL It's more like brown water, so don't want to introduce that into my pond. Also, I know there are or at lesat used to be leeches in there, so have to be careful of that as well. Will go get some more of the water primrose from there, but it's still not growing very well yet. I've got some in my other pond bog, and it's started to grow, but slowly. The local nursery is not selling hyacinths yet, says it is still too cold, and with the last couple of nights getting down to 40's, he's probably right. It's my plant to put a bunch of hyacinths in the new pond, and hope that the goldies don't munch too much on the roots and they can grow and multiply. That way, if I get to the point of needing to thin them out, I can put them in the koi pond and let them munch away!