Java Moss & Java Ferns are two very, very different things. You can get either or both very easily on Aquabid.com if you can't find it in a store. Being in California, you'll find that a lot of things are illegal to sell in stores that are
perfectly fine outside the PRK. ( People's Republik of Kalifornia )
The difference between nitrite & nitrate is an oxygen atom. This difference gives each molecule very different properties, giving nitrite the ability to bond to hemoglobin like carbon monoxide does while making nitrate a handy plant fertilizer.
Not everything noxious in your tank gets broken down into ammonia & nitrate,and the plants don't absorb everything, either. Water changes are still needed to eliminate these other things.
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