30k gallon 18x36 Plaster Pool (IG) & 800gal Spa (IG) | Sta-Rite System 3 Mod Media Filter (S7M120) | AO Smith 1HP Pump (pool) + AO Smith 2 HP Pump (spa) | Jandy Legacy LRZ Heater 250k BTU (gas) | Dolphin Nautilus crawler | Installed in 2000 (?) Seattle WA