water changes to lower high nitrates

[mande51334]

what should the schedule for this be like? 1 big one and then 10% weekly? any help would be appreciated.

 

[bigarn]

How high are the nitrates?

 

[mande51334]

between 60-80

 

[bigarn]

How long has the tank been up and what size? A large water change followed by weekly or bi-weekly 10% changes should help get it down, but you have to find the source so it doesn't elevate again.

 

[mande51334]

tank has been up for a few years, i just got lazy doin water changes now i'm paying for it.