If they're 47 gals together, then they're probably like mine and most of the later trailers. 30 gals for the grey and 17 gals for the black tank.
The grey water tank will back up into the shower pan if it gets full. The black tank would show "contents" below the flush valve if it were near the top.
- Jack
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Hi-Lo 1707T - Tire Minder TPMS on Tow Vehicle and Trailer, 300W Solar Battery Charger, Equal-i-zer WDH, Progressive Dynamics Converter, Fan-Tastic Fan, LiFePO4 battery 12V DC Electrical System, SoftStartRV mounted on A/C
2024 F150 Platinum FX4 3.5L PowerBoost SCrew
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