Aqua Mix Sealing & Coating remover combined with Aqua Mix HDT&G Cleaner will get it off no problem. The issue you will have is using another enhancer because you will not get it all out sub surface and if you use another enhancer it will end up looking patchy where the new enhancer cannot penetrate. So If it were mine I would clean it and then seal it with:
Miracle 511 Porous Plus Sealer
511 Porous Plus
The Best Performing Penetrating Sealer on the Planet!
WATER, STAIN & SLIP PROTECTION FOR:
• Sanded Grout
• Terra Cotta
• Cantera/Adoquin
• Brick
• Limestone
• Sandstone
• Cement
• Slate • Saltillo Tile
• Flagstone
• Concrete Tile
• Pre-Cast Concrete • Flamed & Honed Granite
• Honed/Textured Marble
• Polished Marble
• Polished Granite
511 Porous Plus is a penetrating sealer designed for the protection of the most porous surfaces. 511 Porous Plus forms an invisible barrier that is resistant to moisture and stains while allowing vapor to escape. 511 Porous Plus is not a surface coating and will not alter the natural look. All surfaces are harder and less slippery. INDEPENDENT TESTS SHOW 511 POROUS PLUS OUT PERFORMS COMPETITIVE PRODUCTS. (Test results are available upon request).
SPECIAL FEATURES:
• Interior & Exterior Use
• Weather Resistant
• OK for Food Areas
• Superior Coverage
• Easy to Use
• U.V. Transparent
Coverage: 500 - 2,000 square feet per gallon (72 - 180 square meters per 3.785 liters). 2,000 - 4,000 square feet per gallon (288 - 360 square meters per 3.785 liters) on polished surfaces.
Container sizes: Quart, pint.
511 Porous Plus is V.O.C. Compliant where applicable.
Kev Martin
Tiling Logistics Ltd