Yes on it... btw if i change out 50% gravel today...and do 50% later...isnt that better? And i wont TOUCH my filter lol?
Will add.... a LITTLE blue and orange gravel... dark gravel really makes fish color go dark.
How long has the tank been setup? What filter are you using? I would assume most of your BB will be in your filters so I see no problem in taking all out at once. I would go with natural color gravel mixed with a little of the black you already have. One run with the gravel would be better, less stress on the fish compared to doing two runs at the gravel. And blue background.
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