Scientists from the Russian Academy of Sciences have reported that young carp and sturgeon exhibited a faster rate of growth (30% and 24% respectively) when they were fed with nanoparticles of iron. In swimming pools and fishponds algae removal and prevention is costly. Water cleaning product from Nevada-based Altair Nanotechnologies makes a product with 40 nm particles of a lanthanum-based compound which absorbs phosphates from the water and prevents algae growth. Tests have to confirm that nanoparticles will not harm fish and nanoparticle-laden run-off on human health or on the environment.