I recently upgraded my external filter to a Fluval 305 and placed the ceramic pieces from my old filter into the new filter. I have noticed the nitrite and nitrate levels have risen slightly. Disturbed by this I put some Nutrafin cycle biological supplement in to try and stabilise both.My question is this:
Once the levels are both back to zero is there a need to use the biological supplement on a weekly basis (as it says on the container) or will I be ok with just doing the regular water changes ?
Thank you.
Once the levels are both back to zero is there a need to use the biological supplement on a weekly basis (as it says on the container) or will I be ok with just doing the regular water changes ?
Thank you.