Hmmmm, my system holds about 2000L and i do 100L per week with NSW. The only time you can change too much water is if you do a large water change like a 50% at once, then beware of the parameters.
Before starting in marines my love was discus and the breeders in Malasia, Singapore and such places dont know anything about filtration and do 2 x 100% water changes daily.
Before starting in marines my love was discus and the breeders in Malasia, Singapore and such places dont know anything about filtration and do 2 x 100% water changes daily.