Toxic nitrite is produced by nitrifying bacteria in the biological filter as it breaks down ammonia. This kit tests for harmful nitrite and measures levels from 0 to 5.0 ppm. 180 tests.
Q: What is nitrite?
A: Nitrite (NO2-) is produced in the aquarium by the biological filter. Beneficial bacteria in the biological filter convert toxic ammonia into nitrite (also toxic). The biological filter then converts nitrite into nitrate (NO3-). Testing for the presence of toxic nitrite is essential, so that once detected, steps can be taken to remove it. Otherwise, nitrite in the aquarium will prevent fish from carrying on normal respiration. High levels of nitrite quickly lead to fish death. Even trace amounts of nitrite stress fish, suppressing their immune system and, thereby, increase the likelihood of disease and subsequent fish loss.
Q: What causes a nitrite problem?
A: In a new freshwater aquarium, the nitrite level may surge to 10 ppm (mg/L) or more, and then fall rapidly as the biological filter becomes established. The nitrite will be converted to nitrate. This process may take several weeks. In an established aquarium, the nitrite level should always remain at 0 ppm (mg/L). The presence of nitrite indicates possible over-feeding, too many fish, or inadequate biological filtration.
This extra prefilter traps the majority of coarse dirt particles, even before the water reaches the external filter. Its base rests securely on the bottom of the aquarium. The water is drawn in all round, over a wide surface area, through the modular filter baskets which can be filled with filter media and easily cleaned and replaced. For cleaning, you simply remove the filter baskets.
$12.00Natural weathering processes form the fantastic shapes of South Seas Base Rock by the erosion and pitting of limestone over the course of eons. It is clean and safe for marine reef and hard water freshwater aquariums such as African cichlids. South Seas Base Rock can also be an interesting and realistic addition to a desert reptile biome.
This manual dimmer enables you to use your Twinstar lamp with less light emission. When the "On/Off Mode" button is pressed shortly, the lamp shuts off or is put back on. If the button is pressed for several seconds, the dimmer starts switching through the differrent modes.
There are two variations available, this is for 600C, 600E, 600EA, 900E, 900EA and all S - Series LED light
* This dimmer is not from Twinstar