What do you think is better to clean an external porous marble floor with the sandblasting lance attached to the pressure washer (120 bar), sodium bicarbonate or carbonate. I have to remove, in some places, even some cement glue.
Think twice about using Kieserite as your blasting media. Kieserite is nothing more magnesium sulfate (aka, epsom salts.) There's nothing special about this product at all. Maxx Strip is not "engineered and imported." It's simply magnesium sulfate crystals. Think twice about allowing that to get into your pool. Also, magnesium sulfate will embed into the plaster and you'll notice roughness after a few months. Also, after using Maxx Strip, you'll want to pressure wash all the areas in which you used the Kieserite because the residue will dry very hard and leave a haze all its own.
Maxx Strip is so bad for the pool. If any of the material is left in the pool, it will leave plaster very rough with small crystals. You wont see for 2-3 months. It also drys as hard as concrete. I only use this product when absolutely necessary. I love that it is safe on the tile but way too many long term problems in my opinion. You must drain entire pool, and rinse and scrub to get it all out. When were done our shop vac is basically ruined from sucking this stuff up. With proper pressure and volume I like glass bead over this product.
