The scene contains:
6 Cubic fountain.
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Grouped models for easy editing.
Cubic Fountains are separate,
You can arrange the cube fountain as desired.
for interior and exterior.
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If you want Caustics In CORONA:
- Corona Renderer 4
- Just enable Caustics Solver,
- Render setup> performance> enable Caustics Solver.
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If you want Caustics In VRAY:
-UI Path: ||Render Setup window|| > GI tab
> Caustics,
-Enable caustics
-Disable the VRayMtl's Affect Shadows parameter when using caustics.
-Set Photon emit radius (V-Ray Sun)
-Increase Caustics Subvids (Vray Properties > V-Ray Sun)

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In the archive:
3Dmax 2014 (Corona+Vray) + OBJ + MTL

Scene weight:
Polys: 1,013,272
Verts: 839,785
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Other models of this configuration are available in my profile.
https://3ddd.ru/3dmodels/show/water_bowl_fountain_1