"There are plenty of ways to grow Java Moss, and plenty of ways to control it. But be ruthless. Every piece you discard represents nitrate you're finally eliminating from your system. "
I suppose that if you did a fish in cycle, the java moss would "feed" on the nitrate, and then when you get rid of the moss, the nitrate is out the tank. I think.
Haven't check the link but yeah. Basically the idea is to use a fast growing plant as biological filtration. The plant grows quickly and absorbs nitrate/phosphate/ammonia, etc. When it gets too big you trim it back.
Its used a lot in marine systems with macro algae but works just as well in freshwater. Ideally you want plants which take their nutrients from the water column, grow very fast and are easy to keep. Java moss is good but most floating plants are better.
its more that there was nitrate in the water, but the java moss has taken it in, so that the java moss kinda of like holds the nitrate? So when you remove the java moss its like removing the nitrate. Think of it like the java moss is a sponge. You put the sponge in the water and it absorbs the nitrate, and when you take it out, its less nitrate in your water. But yeah, that sentence is a bit... weird.
ahh So java moss holds nitrate but don't use it.... Very weird.
they was very unclear about what they said.
some might have perceived the plant to be a bad addition in accordance to the sentence