Fixing Foam in an Indoor Fountain: Sealant and Paint Issues

An office lobby fountain foams excessively after new artificial plants, painted rocks, and resealing. Defoamers only work for a week. No fish or live plants. pH adjustment fails.

The expert suspects the new paints or artificial items. Recommends temporarily removing artificial items to test. If they're aquarium/pond safe, they shouldn't foam. Suggests liquid fiber paint (used for pond sealing) as an indoor alternative, or a specialized pond sealant from a koi store.