Lowes had all the supplies I need as well. When it comes to plumbing supplies I find Lowes is better than Menards (which you may not even have where you live), but I can't say about Home Deport. All you need is pvc, bushings, T's, and adapters, but maybe more you have a more elaborate reactor? The gray barped fittings I use are usually not in the PVC section, but close by. Any hardware store should have this stuff. What parts can't you find?