Fuge

[sly fox]

by debris you mean detritus? i dont think that will matter if you have sand or not... sufficient flow wisking it off to your skimmer and not letting it settle/ clean up crew matter more imo.. some people use a filter sock... if you think your skimmer is underskimming then you could try that

live rock and cheato work to reduce nitrates but wont actually remove the debris from the tank.. if the debris is coming from the tank and returning then go with a sock...if it coming from your chaeto from die off then make sure you trim it back regularly