Content Analysis: Im continuing Marrubou's walkthrough :)

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Disc Pool School Level: 299
Disc Pool School Level 169 - Use the double to free up the last ring
Disc Pool School Level 239 - Caution
Disc Pool School Level: 309
Disc Pool School Level 228 - Sniper
Disc Pool School Level: 298
Disc Pool School Level: 295
Disc Pool School Level: 311
Disc Pool School Level 175 - Chaotic Crunch
Disc Pool School Level: 289
Disc Pool School Level 223 - Try both ways
Disc Pool School level 499 - AWARD wining