Did buy orange buckets for mixing/changing water, but then found "food safe" white ones at Lowes for same price. Not sure if HD buckets leach anything, but food safe has to be a good idea, especially if you store water for awhile.
Everything PVC, Silicone (only two "safe" kinds....plain GE Silicone I for glass and "Plastic" Silicone for acrylic/plastics to whatever), Nylon nuts, bolts, washers, etc (use to have a very nice selection in the drawers in hardware....now very limited). I also purchased stainless steel screws to replace the ones on a ten+ year old MAG pump that had rusted away.
OP, what are you trying to get from Home Depot? Is it outaidenof the lists above? Silicone caulk is one you definitely have to be careful with and not get ones with additives to fight mold. And if it’s epoxy, just get a reef safe one to be sure..
Pvc, gamma lids, john guest fittings. Used to buy Bayer insecticide there, but now only Lowes carries it. Electrical items, wood, paint, drill bits (glass), superglue, and other odds n ends occasionally.
I knew there was an epoxy that worked, but was not sure of which one. The others can be toxic. Also, if they ever changed their formula, it's not something they have to disclose. It's not worth it on my tanks...