EdgarMedina1010
Aquarium Advice Freak
i have my (10 gal.)tank fully cycled and i was wondering how often and how much water should i change?
By 'whats in it' you mean fish?tbonem91 said:depends slightly on whats in it, but the "standard" is 25% weekly or so...
rich311k said:keep the nitrates under 20ppm.