i just bought the ammonia fighting crystals because the blend of them with carbon was the cheapest. this stuff was meant to be used as a filter media, and says on the ad's and label that the stuff was "ideal for beginning tanks" though, that probably means in a fishy cycle. i wouldn't put the stuff in the filter until the fishless cycle was done and i had fish in the tank.
i just got the electronic equipment in the 20-gal working today, all i need to do is cycle and add decor.
i just got the electronic equipment in the 20-gal working today, all i need to do is cycle and add decor.