How strong are they? Can they be free standing or do they need support? I want to make an indoor pond. It will be on a stand about one foot of the ground so i can run a wet/dry on it. But still low enofe for the kids to look in.
I used them for my Patio Pond, 100% full. However the bulkhead leaked. Lot of bad reviews regarding the leak. I filled the bulkhead with silicone and never had a leak afterwards.
Rubbermaid stock tank are great but if it will be on a stand have a flat platform like you do with acrylic tanks. As for the drain plug replace it with a heavy duty schedule 80 bulkhead and add a valve for easy water change.