do you dechlorinate or otherwise treat your water? and if so, what do you use?
Possible...17 fish..30 gal..small bodied
I was thinking perhaps there isnt enough fish in the tank to produce enough nitrate to show in one week?
seems you should see some nitrates before a weekly WC even in that tank and loading...
Just done a wc today and did a test and they were the results I posted before..