ok i'm kinda freakin here my nitrates are at 40 ppm and i think its stressin my fish they arent eating and they are acting funny i vacumed the gravel and while doing so i ended up doing about a 30 gallon water change and the nitrates are still at 40ppm. i am also freakin cuz i am out of my master test kits stuff so all i have to test with are the strips. i had kinda planned on not feeding for a few days and doin some more partial water changes while testing the water daily. any other suggestions would be greatly appreciated.. thanks. i dunno if this helps but its a 56 gallon tank.