I'm starting to plan to build a rack for my ASF's. I am probably going to be using MarkS' Plans. How ever I know that ASF's like to chew. I want to find something close to this size but maybe a little bigger. I currently have a small 6 tub rack, I am just running out of room. I am curently using cement mixing tubs, which have worked out great so far. The price is great on them. The only problem is the size. They will almost double the width of MarkS' plans. So if you have any sugestions on the best tubs to use for ASFs and at a decent price. I will probably build a 20-25 rack to start things off.