Planted Tank Guru
Join Date: Jan 2010
Location: Contra Costa CA
I used a 2 x 6 and drilled holes. Not great. Heavy enough to be stable, but the holes are not a good fit for the bottles of reagent, so they tend to fall over.
Then I used some thick styrofoam. Not heavy enough to be stable, but the bottles fit more tightly, so they do not fall over.