So I've bought everything I need to get my 90 gallon up and running except for the rock. Where is the best/cheapest place to buy? I just checked my lfs and they're trying to sell dry rock for $6/lb which is definitely more than I would like to pay. I plan on adding marinepure blocks to my sump later on down the road, so I'm looking for around 50-60 lbs (is this a good idea? I figured because marinepure is extremely porous it will be able to take up the slack if I go light on other rock.) Thanks for any responses


