need to change out the substrate- Help!
Well, I need some advice...
I have a non-planted tank with a gravel base that is working well (cycled, 35 cardinals/neons, stable...). I would like to replace the existing gravel with flourite.
My thought was to siphon out the existing gravel over several water changes and then SLOWLY add flourite into the tank. I can cycle the new flourite in a tank with the "used" water from the changes to keep the tank functioning as I add the new substrate.