So I have ordered my sand. I got (2) 20lb bags of the balck and white mixed cichlid sand. So I will be taking out the stuff I have in there now. I do water changes 1x a week and vacuum when I do, but obviously you don't get everything. Do you think my nitrates will spike when everything gets stirred up? It's gonna be ugly Should I shut off my filter and let it settle and vacuum it up after?