Water Changes...

[Steffyboy]

I've got a 4ft tropical (355L) with an Aqua One 1000 and a TetraTec In Plus 1000 running for filtration and I'm finally happy with what I've got for now (Plus 2 powerheads for circulation)
I've been doing weekly water changes of 20% religiously and was wondering...Now that i have better filtration (Roughly 2000L/H) will i still have to do 20% weekly water changes or can i leave it for a bit longer?
I've got a well stocked and varied tank so what do you guys think?

 

[fluttermoth]

You'll probably have to do the same amount; the end product of the ammonia will still be the same amount of nitrate. There are other reasons for doing water changes, apart from nitrate reduction (mostly replenishment of depleted trace minerals), but they are a good indicator.
 
It's usually suggested you do enough, or large enough, water changes to keep your nitrate at no more than 20ppm above what comes out of your tap.