Clay you say? Oh this has got our attention for sure. Aqua DNA is an additive for your refe aquarium. How does it work? When you add Aqua DNA to your system the clay inside will bond with pollutants, eventually heading down to your skimmer where they will be removed. Thus, the skimmer’s production is significantly increased. Aqua DNA promises that “appetites will be renewed and fish will have a more wiliness to spawn.” Not to mention corals will have “larger polyp extensions and bright colors”. Sounds like the cure-all wonder drug, and we remember what our mom told us when we were young. If it sounds to good to be true it probably is. Ingredients include: silicon, aluminum, iron, calcium, magnesium, potassium, sodium, honey, vanilla, garlic, chamomile, aloe. Those later ingredients sound more like a skin-care product then one you would want to put in your tank. A bottle of the stuff is 12.99 euros ($16.94).