Substrate questions. Need a little advice.

[kueluck]

I had a planted viv in that size but went with this instead for the three WTF's and LOVE IT!!

So much easier to keep clean and I don't have to worry about them ingesting any substrate if a feeder gets out of the bowl.

But if you want to go with planted I highly recommend drilling the bottom, put in a false bottom with ABG mix for planting. This is my 24x24x18 done that way for my pair of AGTF.

The plants have taken off like crazy and doing outstanding. I plan to redo all my tanks this way with the drilled bottom.