03-05-2012, 04:22 PM
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Originally Posted by Byron
Keep the filter running and don't clean it to preserve bacteria. Also, any decor that is staying in the tank after the new substrate should be kept wet in a pail of tank water to preserve the bacteria. If you had live plants, even just floating ones, you would have no issues at all.
Are you going to move the fish to a temporary tank, or leave them in when you remove the existing gravel and put in the new?
And, welcome to Tropical Fish Keeping forum.
Byron, you have an amazing collection, just truly astounding... you git!