When your RV black tank overflows through the vent at less than full capacity, it's typically due to incorrect tank positioning, vent pipe placement, or sensor issues rather than blockages. The tank may be installed at an angle or the vent pipe may enter too low on the tank.
Black tank flush not accepting water usually means stuck check valve or debris in the spray nozzle. Try direct water connection without regulator, or clear valve with compressed air.
With a macerator pump, RV-specific toilet paper is not necessary. The macerator grinds paper with waste. Single-ply or septic-safe regular toilet paper works well - Scott 1000 is the most recommended. Avoid ultra-plush multi-ply and wet wipes.
Top Presto-Fit alternatives: Camco RhinoFLEX (best value), Valterra Dominator (heavy duty), Lippert Waste Master (premium cam-lock). Look for 20+ mil thickness, quality fittings, and cold-weather flexibility. Avoid ultra-cheap thin-wall hoses.
Odor while traveling is pressure differential pushing tank air back into coach. Check vent for blockage. Add powered vent fan or 360 Siphon cap to solve. Also check Vacuflush ball seal for wear allowing odor bypass.
Travel with winterized RV but expect no water systems. Use campground facilities or de-winterize once reaching warm destination. Plan to de-winterize in Keys and re-winterize for return trip north.
In the Bay Star 3826, the half bath black tank vent typically runs through or near the electrical cabinet, while the rear bath vent usually routes through the bedroom wall cavity or bathroom wall up to the roof. Both vents terminate at roof-mounted vent caps.
Everything you need to know about RV plumbing systems from fresh water supply to waste management.
First-use odor is bacteria/biofilm in lines between trips. Filters only clean incoming water, not whats sitting in plumbing. Run all faucets 30 seconds before use. Sanitize system quarterly. Pay attention to hot water tank maintenance.