Planted Tank Guru
Join Date: Jan 2010
Location: Contra Costa CA
I think that would be too much, especially breaking them apart. The more surface that is exposed to the water the faster the nutrients are released.
In that small a tank most of the roots are likely to be all over, anyway, so I would apply perhaps 3-4 tablets in a line down the middle. The plants at the back will have roots spreading into the middle area. The smaller plants at the front might not have roots that wide spread, so you might dose one or two more near the front. Total of only 6 or so in the whole tank. Do not break up any of them.