KwajRocks
Premium Member
Mel, It is a light grid. You can lay filter material on it to catch larger detritis. I do not use that material myself, because I know I will not be diligent enough to clean it as needed. ( I already have young children....something else to clean, would just send me over the edge.) The drains are above the level of the grid, so if I change my mind (sometime in my childrens' older years), I can add it later.
I've started filling the first tank with RODI.......and well, 26 hours later, we're at 5" deep.

I've started filling the first tank with RODI.......and well, 26 hours later, we're at 5" deep.