how big is your tank
how many power heads you have
how often you feed and what do you feed
I run 3 powerheads in my 37 bowfront
3 powerheads in my 40b which is still new and I'm getting cayno and diatoms but I also run a small plastic toy rake to circulate it once I add my stock it will get stirred up clowns are good for that
and just grab out any loose debris with the rake
also do weekly waterchanges and don't overfeed
my 37 gets it in dead spots but I get it raked daily
I don't dig just drag lightly over top sand to keep it looking good , I'm just anal about my tanks , I'm retired due to cancer so I have all the time in the world to work on my tanks
conch does wonders also I have 2 in each tank