I have had to restart my tank, and I am going barebottom this time, no more nasty things hiding in the gravel to break out and kill the fish while I am on vacation. ANYWAY, I am wanting to plant an anacharis (sp?) forest along the back and would like to use terracotta pots but are all terracotta pots aquarium safe? And should I buy that expensive plant substrate to plant them in or what? Also what size pots should I get for a healthy bunch of anacharis? I have a 55 gallon(long) by the way.

untreated terra cotta is fine as far as I know.
If you can find the thinner oblong pots, I'd grab one of those - unless you'd like mulitple little pots
If you go with the smaller, individual pots and we considter a bunch to be what you'd find at a petstore... a 3" pot will be fine

anacharis is fine with just normal gravel

Thanks Trudy! Is untreated terracotta marked as thus?

I bought terracotta pots with plastic plants already in them from pets at home.Guess petsmart your equivalent.I think they are gr8 my new 30 gallon got them same as my temp tank got em.