It is a gimmick. Absolutely unnecessary for any well set up and established aquarium. In fact IMO the claim of "helps clean a dirty aquarium" is bordering on misleading. As for "Continuous use assures an active biological filter, cleaner aquarium, healthier fish and good water quality" I would also dispute the claim that the aquarium would be any 'cleaner' or the fish any healthier when using this product with a well established biological filter. You are only going to grow as much bacteria as the ammonia from your fish can sustain, water changes and proper filter maintenance remove/kill very few of those bacteria, so adding more is going to achieve nothing.
It could help speed up the cycling process, though I would be interested to find out how long after being added to the tank the bacteria last without a source of ammonia, and I'm not sure I'd trust it enough to add a bottle to the tank and dump my prize fish straight in there...
It could help speed up the cycling process, though I would be interested to find out how long after being added to the tank the bacteria last without a source of ammonia, and I'm not sure I'd trust it enough to add a bottle to the tank and dump my prize fish straight in there...
