Before I answer that question I've got to say I REALLY like that pic. The frogs in our pond haven't learned how to play checkers yet

. And the unique variety of Rush in the background of that shot is the same as the one my wife picked up for ours just yesterday
Lithaqua is a carbonate enhancer and biomedia combined, so I don't see why it would be too late for some. One thing I'm certain of is that it goes to work in a HURRY. My filtration on the remodeled pond kicked off in record time, due in part to seeding the filters with live media from the temporary pond I'm sure, but I think the Lithaqua did make a difference in performance. Our water is in better condition than ever and our Koi's appetites are voracious.