Gravel Vaccing!

Lightly I believe, just clean off the surface, but do it regularly. I used to deep-clean my gravel, and then realised that probably removing all these 'nutrients' from the area the roots where in wasn't a good idea, (especially as I feed my plants by putting NLB clay balls into the gravel near their bases!) - lol
 
I second that, my tank runs an undergravel so I don't keep the gravel too spotless, I don't bother lifting up the decorations or anything, I just run the gravel vac around them once or twice a week whenever I change the water.
 
Just dig in to the substrate well away from the plants, skim the surface near them.
 

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