Adding sand on top of existing dsb?

[Kinerson]

I have a 55 gal reef in my care that has a 3" sand bed in it. I would like to increase the depth by an inch or so to increase denitrification. Would this help? Can it be added on top of existing bed without problems?
Thanks,
Greg

 

[mmkeeper]

it would help some. You need to do it slowly only about a half inch to thre quarters at a time. Let the critters and bacteria in the sand adjust then add more. I did it to mine. I used a piece of pvc and a funnel to put the sand where I wanted it. It will cloudy you water for a few hours.

 

[Bainic]

Yes you can add to it, but do it slowly, only 1/4th to 1/2 an inch at a time, spread out over a few weeks.

 

[Kinerson]

Thanks guys