ctoychik;2123141; said:Thanks for the advice, but as usual that leads to more questions ^^
Dare i ask what is a "nitrate filter"? Errrrr .... Can i assume it is a biological filter i.e. a sump with overflow filled with bio balls. Please confirm.
If it is not, please elaborate more details.
PS: if the test strip is to be believed my nitrate levels in the outdoor pond/aquarium between 20-40 ppm (errr not zero ... i am not even sure it is possible to get it to zero) ... nevertheless the water is cloudy (but not smelly)
start here
start here http://www.monsterfishkeepers.com/fo...itrate&page=17